diff --git a/data/scripts/story3.lua b/data/scripts/story3.lua
index e542c48b..5f8d7f54 100644
--- a/data/scripts/story3.lua
+++ b/data/scripts/story3.lua
@@ -61,6 +61,50 @@ M.ROUTE_12_SUPER_ROD_HOUSE = {
 M.ROUTE_12_SUPER_ROD_HOUSE.talk.TEXT_ROUTE12SUPERRODHOUSE_FISHING_GURU[9] =
   { "show_text", "_Route12SuperRodHouseFishingGuruTryFishingText" }
 
+-- -------------------------------------------------------------------
+-- Pokemon Tower 5F purified zone (scripts/PokemonTower5F.asm
+-- PokemonTower5FDefaultScript): the 2x2 center pad heals the party once
+-- per visit.  EVENT_IN_PURIFIED_ZONE latches until the player steps off;
+-- while on the pad the map script also sets BIT_NO_BATTLES (we return
+-- true from onStep so wild encounters are skipped the same way).
+-- -------------------------------------------------------------------
+
+local TOWER_5F_PURIFIED = {
+  [10 * 256 + 8] = true, [11 * 256 + 8] = true,
+  [10 * 256 + 9] = true, [11 * 256 + 9] = true,
+}
+
+-- HealParty -> GBFadeOutToWhite -> Delay3 -> Delay3 -> GBFadeInFromWhite
+-- -> TEXT_POKEMONTOWER5F_PURIFIEDZONE (no Music_PkmnHealed).
+local TOWER_5F_HEAL = {
+  { "heal_party" },
+  { "fade", "out", "white" },
+  { "wait", 3 },
+  { "wait", 3 },
+  { "fade", "in", "white" },
+  { "show_text", "_PokemonTower5FPurifiedZoneText" },
+}
+
+M.POKEMON_TOWER_5F = {
+  onStep = function(game, ow, x, y)
+    if not TOWER_5F_PURIFIED[x * 256 + y] then
+      game.save.flags.EVENT_IN_PURIFIED_ZONE = nil
+      return false
+    end
+    if game.save.flags.EVENT_IN_PURIFIED_ZONE then
+      return true
+    end
+    if ow.runner and ow.runner:isRunning() then return false end
+    game.save.flags.EVENT_IN_PURIFIED_ZONE = true
+    if ow.runner then
+      ow.runner:run(TOWER_5F_HEAL)
+    elseif ow.queueScript then
+      ow:queueScript(TOWER_5F_HEAL)
+    end
+    return true
+  end,
+}
+
 -- -------------------------------------------------------------------
 -- The ghost Marowak (scripts/PokemonTower6F.asm): blocks the stairs at
 -- (10,16) until defeated.
diff --git a/src/battle/EffectRegistry.lua b/src/battle/EffectRegistry.lua
index 78d55837..09fe128b 100644
--- a/src/battle/EffectRegistry.lua
+++ b/src/battle/EffectRegistry.lua
@@ -176,25 +176,51 @@ function EffectRegistry.runDamaging(battle, ctx, record)
   end
   battle.lastDamage = dmg -- wDamage (shared by both sides, read by Counter)
 
-  -- the hit blink + damage sound ride the queue behind the animation:
-  -- on the move's anim row when one was announced, else on a bare hit
-  -- row (thrash/rage continuations), placed BEFORE the drain rows the
-  -- hits loop inserts so the blink precedes the bar drain
-  local hitRow = battle.moveAnimRow
-  if not hitRow then
-    battle.nextInsert = (battle.nextInsert or 0) + 1
-    hitRow = { hitRow = true }
-    table.insert(battle.queue, battle.nextInsert, hitRow)
-  end
+  -- the hit blink + damage sound ride each animation row, placed BEFORE
+  -- that hit's drain so the blink precedes the bar.  Multi-hit moves
+  -- replay PlayMoveAnimation per strike (pokered: GetPlayerAnimationType
+  -- / GetEnemyAnimationType loop on wNumAttacksLeft); hit 1 reuses the
+  -- announcement-time moveAnimRow, later hits queue fresh anim rows.
+  -- Thrash/rage continuations have no announcement anim -- a bare
+  -- hitRow carries the blink instead.
+  local hitSfx = info.typeMult > 10 and "Super_Effective"
+                 or info.typeMult < 10 and "Not_Very_Effective" or "Damage"
+  local hitFx = { sfx = hitSfx,
+                  blink = battle:animationsOn() and target or nil }
 
   local totalDealt = 0
   local landed, brokeSub = 0, false
   for h = 1, hits do
     if target.mon.hp <= 0 then break end
+    local hitRow
+    if h == 1 then
+      hitRow = battle.moveAnimRow
+      if not hitRow then
+        battle.nextInsert = (battle.nextInsert or 0) + 1
+        hitRow = { hitRow = true }
+        table.insert(battle.queue, battle.nextInsert, hitRow)
+      end
+    else
+      battle.nextInsert = (battle.nextInsert or 0) + 1
+      hitRow = { anim = move.id, attackerIsPlayer = user.isPlayer }
+      table.insert(battle.queue, battle.nextInsert, hitRow)
+    end
     local hadSub = target.substituteHP ~= nil
     local dealt = battle:applyDamage(target, dmg)
     totalDealt = totalDealt + dealt
     landed = h
+    if dealt > 0 then hitRow.hit = hitFx end
+    -- PrintCriticalOHKOText + DisplayEffectiveness run inside the
+    -- multi-hit loop (core.asm .moveDidNotMiss before the jump back
+    -- to GetPlayerAnimationType), so crit/effectiveness reprint on
+    -- every strike -- damage was only rolled once
+    if info.crit then battle:sayNext("Critical hit!") end
+    if info.ohko then battle:sayNext("One-hit KO!") end
+    if info.typeMult > 10 then
+      battle:sayNext("It's super\neffective!")
+    elseif info.typeMult < 10 then
+      battle:sayNext("It's not very\neffective...")
+    end
     if Runtime.wants("battle.damage_dealt") then
       Runtime.emit("battle.damage_dealt", {
         battle = battle, user = user, target = target, move = move,
@@ -208,23 +234,6 @@ function EffectRegistry.runDamaging(battle, ctx, record)
     end
   end
   hits = landed > 0 and landed or hits
-  if totalDealt > 0 then
-    -- the original's per-hit sound: normal / super / not-very-effective
-    local hitSfx = info.typeMult > 10 and "Super_Effective"
-                   or info.typeMult < 10 and "Not_Very_Effective" or "Damage"
-    hitRow.hit = { sfx = hitSfx,
-                   blink = battle:animationsOn() and target or nil }
-  end
-  -- PrintCriticalOHKOText prints "Critical hit!"/"One-hit KO!" right
-  -- after the damage lands, BEFORE DisplayEffectiveness (core.asm
-  -- .moveDidNotMiss); the multi-hit count follows the last hit
-  if info.crit then battle:sayNext("Critical hit!") end
-  if info.ohko then battle:sayNext("One-hit KO!") end
-  if info.typeMult > 10 then
-    battle:sayNext("It's super\neffective!")
-  elseif info.typeMult < 10 then
-    battle:sayNext("It's not very\neffective...")
-  end
   if hits > 1 then
     -- player: _MultiHitText; enemy: _HitXTimesText (always plural)
     if user.isPlayer then
diff --git a/src/core/Game.lua b/src/core/Game.lua
index a7bbb14b..5175c42f 100644
--- a/src/core/Game.lua
+++ b/src/core/Game.lua
@@ -322,7 +322,9 @@ function Game:keypressed(key)
     return
   elseif key == "5" then
     -- cycle GBC FX OFF → 1 → 2 → 3 → 4 (unlit-GBC ladder); always on
+    -- desktop.  Mobile refuses the present shader (issue #136).
     local GBCFX = require("src.render.GBCFX")
+    if not GBCFX.isSupported() then return end
     self.save.options.gbcfx = GBCFX.cycle()
     self:writeOptions()
     return
@@ -443,12 +445,15 @@ function Game:applyOptions(opts)
   if Sound.applyOptions then Sound.applyOptions(opts) end
   require("src.render.PaletteFX").applyOptions(opts)
   require("src.render.Tilt").applyOptions(opts)
-  require("src.render.GBCFX").applyOptions(opts)
+  -- returns true when a persisted GBC FX level was cleared on mobile
+  local gbcCleared = require("src.render.GBCFX").applyOptions(opts)
   require("src.core.VideoMode").applyOptions(opts)
   -- normalizes a nil/garbage cap to the 60 default, so old saves with no
   -- fpsCap key pace at the standard rate (issue #88)
   require("src.core.FrameCap").applyOptions(opts)
   Input:applyBindings(opts.bindings)
+  -- heal soft-bricked APK installs that already saved gbcfx > 0 (#136)
+  if gbcCleared then self:writeOptions() end
 end
 
 function Game:restoreSave(loaded, recovered)
diff --git a/src/core/Input.lua b/src/core/Input.lua
index 8155e3d6..d0678f62 100644
--- a/src/core/Input.lua
+++ b/src/core/Input.lua
@@ -11,7 +11,12 @@ local DEFAULT_BINDINGS = {
   z = "a", ["return"] = "a", space = "a",
   x = "b", backspace = "b",
   ["kpenter"] = "start", escape = "start",
+  -- Select: fight-menu move reorder + bag item reorder. Tab is the
+  -- discoverable default (shown in CONTROLS); both shifts stay as
+  -- aliases so Right-Shift muscle memory from older builds still works.
+  tab = "select",
   rshift = "select",
+  lshift = "select",
 }
 
 -- keys that map to "start" but also to "a" would conflict; keep Enter = a,
diff --git a/src/core/TouchInput.lua b/src/core/TouchInput.lua
index 984c79b6..2245a7f4 100644
--- a/src/core/TouchInput.lua
+++ b/src/core/TouchInput.lua
@@ -48,7 +48,7 @@ local KEY = {
   a = "z",
   b = "x",
   start = "escape",
-  select = "rshift",
+  select = "tab",
 }
 
 local function nowMs()
diff --git a/src/render/GBCFX.lua b/src/render/GBCFX.lua
index 05f49582..0a05db7f 100644
--- a/src/render/GBCFX.lua
+++ b/src/render/GBCFX.lua
@@ -22,6 +22,15 @@ GBCFX.level = 0
 
 local shader -- false = unavailable (headless / no shader support)
 
+-- Mobile GPUs often compile this pass but present a black frame, and the
+-- level persists in options.lua -- soft-bricking the APK until a manual
+-- edit (issue #136).  Desktop is unchanged; Android/iOS refuse the effect.
+function GBCFX.isSupported()
+  if not love or not love.system or not love.system.getOS then return true end
+  local osName = love.system.getOS()
+  return osName ~= "Android" and osName ~= "iOS"
+end
+
 -- GLSL 1.20-compatible (no array initializers; wavelength terms and the
 -- shadow blur are unrolled by hand).
 local SHADER_SRC = [[
@@ -214,6 +223,7 @@ vec4 effect(vec4 color, Image tex, vec2 tc, vec2 pc)
 GBCFX.SHADER_SRC = SHADER_SRC -- exposed for the standalone compile check
 
 function GBCFX.shader()
+  if not GBCFX.isSupported() then return nil end
   if shader == nil then
     local ok, sh = pcall(love.graphics.newShader, SHADER_SRC)
     shader = ok and sh or false
@@ -222,6 +232,10 @@ function GBCFX.shader()
 end
 
 function GBCFX.setLevel(level)
+  if not GBCFX.isSupported() then
+    GBCFX.level = 0
+    return
+  end
   level = math.floor(tonumber(level) or 0)
   if level < 0 then level = 0 end
   if level > 4 then level = 4 end
@@ -230,12 +244,26 @@ end
 
 -- Advance OFF → 1 → 2 → 3 → 4 → OFF.  Returns the new level.
 function GBCFX.cycle()
+  if not GBCFX.isSupported() then
+    GBCFX.level = 0
+    return 0
+  end
   GBCFX.setLevel((GBCFX.level + 1) % 5)
   return GBCFX.level
 end
 
+-- Apply opts.gbcfx.  On unsupported platforms force OFF and clear a
+-- persisted non-zero value so boot recovers from a soft-brick.  Returns
+-- true when opts was sanitized (caller should persist options.lua).
 function GBCFX.applyOptions(opts)
+  if not GBCFX.isSupported() then
+    local had = opts and (tonumber(opts.gbcfx) or 0) ~= 0
+    if opts then opts.gbcfx = 0 end
+    GBCFX.level = 0
+    return had and true or false
+  end
   GBCFX.setLevel(opts and opts.gbcfx or 0)
+  return false
 end
 
 function GBCFX.levelLabel(level)
@@ -243,7 +271,7 @@ function GBCFX.levelLabel(level)
 end
 
 function GBCFX.active()
-  return GBCFX.level > 0 and GBCFX.shader() ~= nil
+  return GBCFX.isSupported() and GBCFX.level > 0 and GBCFX.shader() ~= nil
 end
 
 -- Draw `canvas` fullscreen through the GBC FX shader into the current
diff --git a/src/render/PaletteFX.lua b/src/render/PaletteFX.lua
index f1100fde..d2fa39d0 100644
--- a/src/render/PaletteFX.lua
+++ b/src/render/PaletteFX.lua
@@ -353,18 +353,21 @@ local TILESET_GROUP_EXCEPTIONS = {
   CEMETERY = { tiles = { [0x22] = true }, group = 0 },
 }
 
--- pokered-gbc's lobby.bst repoints the Celadon roof table's flat top
+-- pokered-gbc's lobby.bst repoints the Celadon LOBBY table's flat top
 -- (block 29, cells 5/6/9/10) at a duplicate tile ($5a, BROWN) so the
 -- tabletop and the checkerboard floor -- both raw tile $37 -- can take
 -- different palettes; the vanilla-derived blockset shares the one tile
 -- id, so the RED++ atlas path re-creates the duplicate: the alias slot
 -- is baked as a copy of `tile` in `group`'s colors, and the listed
 -- 0-based block cells draw the alias instead of the shared tile.
+-- Same block appears on CELADON_MART_ROOF (#52) and CELADON_DINER (#84).
+local LOBBY_TABLE_TOP_ALIAS = {
+  { block = 29, cells = { [5] = true, [6] = true, [9] = true, [10] = true },
+    tile = 0x37, alias = 0x5a, group = 5 },
+}
 PaletteFX.TILE_ALIASES = {
-  CELADON_MART_ROOF = {
-    { block = 29, cells = { [5] = true, [6] = true, [9] = true, [10] = true },
-      tile = 0x37, alias = 0x5a, group = 5 },
-  },
+  CELADON_MART_ROOF = LOBBY_TABLE_TOP_ALIAS,
+  CELADON_DINER = LOBBY_TABLE_TOP_ALIAS,
 }
 local ROOF_GROUP = 6
 local ROUTE_6_SAFFRON = { mapId = "ROUTE_6", useMapId = "SAFFRON_CITY", cellYBelow = 2 }
diff --git a/src/render/TileRenderer.lua b/src/render/TileRenderer.lua
index 8cf5c115..1e01b1fd 100644
--- a/src/render/TileRenderer.lua
+++ b/src/render/TileRenderer.lua
@@ -55,8 +55,29 @@ local FLOWER_IMAGES = {
 local SPINNER_STRIP = "assets/generated/tilesets/spinners.png"
 
 local animFrame = 0
-function TileRenderer.tick()
-  animFrame = animFrame + 1
+local animAccum = 0
+local ANIM_STEP = 1 / 60 -- Game Boy logic rate (matches FixedStep.STEP)
+
+-- Advance water/flower/spinner tile animation.  Called from the overworld
+-- draw path so it keeps running under dialogs (overworld update does not),
+-- but consumes wall-clock dt into 60Hz steps so high/low display refresh
+-- no longer speeds up or slows the cycle (issue #4).
+-- tick() / tick(nil) with no love.timer.getDelta (headless tests) still
+-- advances exactly one frame per call.
+function TileRenderer.tick(dt)
+  if dt == nil and love and love.timer and love.timer.getDelta then
+    dt = love.timer.getDelta()
+  end
+  if dt == nil then
+    animFrame = animFrame + 1
+    return
+  end
+  -- Cap catch-up so a long stall cannot jump many water/flower periods
+  animAccum = math.min(animAccum + dt, 0.25)
+  while animAccum >= ANIM_STEP do
+    animAccum = animAccum - ANIM_STEP
+    animFrame = animFrame + 1
+  end
 end
 
 -- ------------------------------------------------------------------
diff --git a/src/ui/BindingsMenu.lua b/src/ui/BindingsMenu.lua
index 22155885..2c5ef036 100644
--- a/src/ui/BindingsMenu.lua
+++ b/src/ui/BindingsMenu.lua
@@ -11,7 +11,9 @@ local Input = require("src.core.Input")
 local BindingsMenu = setmetatable({}, { __index = ListMenu })
 BindingsMenu.__index = BindingsMenu
 
--- Input.lua's map, primary key first where several keys share a button
+-- Input.lua's map, primary key first where several keys share a button.
+-- `pad` is the default SDL gamecontroller button (see Input.lua); shown
+-- on the SELECT row so controller Back/View is discoverable (#73).
 local BUTTONS = {
   { id = "up", label = "UP", key = "up" },
   { id = "down", label = "DOWN", key = "down" },
@@ -20,7 +22,7 @@ local BUTTONS = {
   { id = "a", label = "A", key = "z" },
   { id = "b", label = "B", key = "x" },
   { id = "start", label = "START", key = "escape" },
-  { id = "select", label = "SELECT", key = "rshift" },
+  { id = "select", label = "SELECT", key = "tab", pad = "back" },
 }
 
 -- a binding is a plain key string or { key, pad }; absent = the fixed
@@ -32,13 +34,29 @@ local function boundKey(overlay, def)
   return def.key
 end
 
+local function boundPad(overlay, def)
+  local b = overlay and overlay[def.id]
+  if type(b) == "table" and b.pad then return b.pad end
+  return def.pad
+end
+
+-- Key column for every row. SELECT also appends "/PAD" (default BACK)
+-- so controller Select/View is visible without opening a second legend.
+local function boundRight(overlay, def)
+  local key = boundKey(overlay, def)
+  if def.id ~= "select" then return key:upper() end
+  local pad = boundPad(overlay, def)
+  if pad then return (key .. "/" .. pad):upper() end
+  return key:upper()
+end
+
 function BindingsMenu.new(game)
   local overlay = game.save and game.save.options
                   and game.save.options.bindings
   local items = {}
   for i, def in ipairs(BUTTONS) do
     items[i] = { label = def.label,
-                 right = boundKey(overlay, def):upper(), button = def }
+                 right = boundRight(overlay, def), button = def }
   end
   local self = setmetatable(ListMenu.new(game, "CONTROLS", items, {}),
                             BindingsMenu)
@@ -78,7 +96,7 @@ function BindingsMenu:storeBinding(slot, value)
   end
   b[slot] = value
   opts.bindings[item.button.id] = b
-  item.right = boundKey(opts.bindings, item.button):upper()
+  item.right = boundRight(opts.bindings, item.button)
   Input:applyBindings(opts.bindings)
   if game.writeOptions then game:writeOptions() end
 end
diff --git a/src/ui/OptionsMenu.lua b/src/ui/OptionsMenu.lua
index 1fa6b396..c838e422 100644
--- a/src/ui/OptionsMenu.lua
+++ b/src/ui/OptionsMenu.lua
@@ -110,7 +110,7 @@ local function sameRows(_, rows) return rows end
 -- the vanilla rows as descriptors; each step body is the old per-index
 -- ladder's, so the save.options mutations are unchanged
 local function buildRows(game)
-  return {
+  local rows = {
     { id = "textSpeed", label = "TEXT SPEED",
       value = function(g) return SPEEDS[speedIndex(g)][2] end,
       step = function(g)
@@ -252,6 +252,15 @@ local function buildRows(game)
         require("src.ui.Screens").push(g, "BindingsMenu")
       end },
   }
+  -- issue #136: hide GBC FX on Android/iOS -- the present shader soft-bricks
+  if not GBCFX.isSupported() then
+    local filtered = {}
+    for _, row in ipairs(rows) do
+      if row.id ~= "gbcfx" then filtered[#filtered + 1] = row end
+    end
+    rows = filtered
+  end
+  return rows
 end
 
 function OptionsMenu.new(game)
diff --git a/src/ui/PartyMenu.lua b/src/ui/PartyMenu.lua
index 38310e99..8c455d3e 100644
--- a/src/ui/PartyMenu.lua
+++ b/src/ui/PartyMenu.lua
@@ -11,6 +11,8 @@ local Logger = require("src.core.Logger")
 local Runtime = require("src.mods.Runtime")
 local Screens = require("src.ui.Screens")
 local Theme = require("src.ui.Theme")
+local FieldDefaults = require("src.world.FieldDefaults")
+local Map = require("src.world.Map")
 
 local PartyMenu = {}
 PartyMenu.__index = PartyMenu
@@ -355,8 +357,12 @@ function PartyMenu:update(dt)
       -- Battle still excludes this list via `not self.battle`. Softboiled
       -- can appear for a fainted user; its heal transfer then no-ops.
       if not self.battle and ow then
+        -- FLY/TELEPORT: CheckIfInOutsideMap (OVERWORLD + PLATEAU —
+        -- Route 23 / Indigo Plateau outdoor), not OVERWORLD alone (#83)
+        local outside = Map.isOutside(ow.map.def,
+          FieldDefaults.field(self.game.data, "outsideTilesets"))
         for _, mv in ipairs(mon.moves) do
-          if mv.id == "FLY" and ow.map.def.tileset == "OVERWORLD"
+          if mv.id == "FLY" and outside
              and self.game.save.inventory.THUNDERBADGE then
             table.insert(items, { label = "FLY", action = "fly" })
           elseif mv.id == "FLASH" and ow.dark
@@ -375,7 +381,7 @@ function PartyMenu:update(dt)
             table.insert(items, { label = "STRENGTH", action = "strength" })
           elseif mv.id == "SOFTBOILED" then
             table.insert(items, { label = "SOFTBOILED", action = "softboiled" })
-          elseif mv.id == "TELEPORT" and ow.map.def.tileset == "OVERWORLD" then
+          elseif mv.id == "TELEPORT" and outside then
             -- TELEPORT works only OUTDOORS (start_sub_menus.asm
             -- .teleport -> CheckIfInOutsideMap); dark maps don't
             -- block it
diff --git a/src/world/OverworldController.lua b/src/world/OverworldController.lua
index 6daa739a..a0f6d1fb 100644
--- a/src/world/OverworldController.lua
+++ b/src/world/OverworldController.lua
@@ -2431,6 +2431,27 @@ function OverworldState:runVictoryHook()
   if hooks and hooks.onVictory then hooks.onVictory(Game, self) end
 end
 
+-- pokered player sprite is fixed at screen ($40, $3c).  TrainerEngage reads
+-- the NPC's 8-bit SPRITESTATEDATA1 X/Y pixels and CalcDifference; engage
+-- distance is stored as range<<4 (pixels).  There is no tile LOS check for
+-- interposed NPCs / walls -- but unsigned 8-bit Y makes a sprite exactly 4
+-- tiles north of the player sit at Y=$fc, so |$3c-$fc|=$c0 and a range-4
+-- DOWN trainer does not engage that tile (Route 9 Bug Catcher / issue #76).
+local PLAYER_SCREEN_X, PLAYER_SCREEN_Y = 0x40, 0x3c
+local function u8(n) return n % 256 end
+local function calcDiff(a, b)
+  a, b = u8(a), u8(b)
+  return a >= b and a - b or b - a
+end
+local function trainerSightPixelDist(npc, player, horizontal)
+  if horizontal then
+    return calcDiff(PLAYER_SCREEN_X,
+                    u8(PLAYER_SCREEN_X + (npc.cellX - player.cellX) * 16))
+  end
+  return calcDiff(PLAYER_SCREEN_Y,
+                  u8(PLAYER_SCREEN_Y + (npc.cellY - player.cellY) * 16))
+end
+
 -- STAY trainers with a facing spot the player crossing their line of
 -- sight (range from the extracted trainer headers), walk up and battle.
 function OverworldState:checkTrainerSight()
@@ -2448,22 +2469,23 @@ function OverworldState:checkTrainerSight()
       local range = header and header.range or 0
       local vec = DIRVEC[npc.facing]
       if range > 0 and vec then
-        local dist
+        local dist, horizontal
         if vec[1] ~= 0 and npc.cellY == p.cellY then
           dist = (p.cellX - npc.cellX) * vec[1]
+          horizontal = true
         elseif vec[2] ~= 0 and npc.cellX == p.cellX then
           dist = (p.cellY - npc.cellY) * vec[2]
+          horizontal = false
         end
-        -- pokered's TrainerEngage / CheckSpriteCanSeePlayer compares screen
-        -- coordinates only (home/trainers.asm, engine/overworld/
-        -- trainer_sight.asm) -- there is no line-of-sight obstruction check.
-        -- An aligned trainer within range engages through interposed NPCs and
-        -- unwalkable tiles, and the scripted walk-up below (scriptMove) also
-        -- ignores collision, so the trainer simply walks/overlaps through
-        -- anything on the line -- exactly as OAM sprites overlap on hardware.
-        if dist and dist >= 1 and dist <= range then
-          self:startTrainerApproach(npc, dist)
-          return
+        -- Screen-pixel range (CheckSpriteCanSeePlayer), not cell count:
+        -- same facing-line rule as before, but the $fc Y quirk excludes the
+        -- 4-tiles-north tile that cell math would still count as in range.
+        if dist and dist >= 1 then
+          local pixelDist = trainerSightPixelDist(npc, p, horizontal)
+          if pixelDist > 0 and pixelDist <= range * 16 then
+            self:startTrainerApproach(npc, dist)
+            return
+          end
         end
       end
     end
@@ -3492,7 +3514,9 @@ function OverworldState:billboard(fx, fy, vw, vh, colors, keyed, drawFn)
 end
 
 function OverworldState:drawWorld()
-  -- advance the water/flower tile animation (runs under dialogs too)
+  -- advance the water/flower tile animation (runs under dialogs too).
+  -- TileRenderer.tick uses wall-clock 60Hz steps so display refresh rate
+  -- does not speed or slow the cycle (issue #4).
   require("src.render.TileRenderer").tick()
   -- let the renderer know whether a spinner puzzle is currently sliding
   -- the player, so it can flicker the arrow tiles between the blur and
diff --git a/src/world/Player.lua b/src/world/Player.lua
index 7a1b4454..d966fbb8 100644
--- a/src/world/Player.lua
+++ b/src/world/Player.lua
@@ -81,6 +81,14 @@ end
 
 -- Advance one fixed step; returns true when a step just completed.
 function Player:update()
+  -- land-frame walk pose lasts only through the draw after completion;
+  -- the next update (idle or a chained step) clears it
+  self.stepLanded = false
+  -- Ledge-hop arc is cosmetic but must track the fixed 60Hz logic step,
+  -- not love.draw's display refresh (issue #4: >59fps ended early).
+  if self.hopFrames and self.hopFrames > 0 then
+    self.hopFrames = self.hopFrames - 1
+  end
   if self.turnTimer > 0 then
     self.turnTimer = self.turnTimer - 1
   end
@@ -109,6 +117,11 @@ function Player:update()
     self.px, self.py = self.cellX * 16, self.cellY * 16
     self.moving = false
     self.stepFlip = not self.stepFlip
+    -- keep animClock's pose on this frame (issue #82): bike steps land
+    -- mid-cycle (animClock % 16 == 8), and walkPhase used to snap to
+    -- stand whenever moving cleared — a stand flash every tile on the
+    -- bike, and sometimes after dismount when the clock is desynced
+    self.stepLanded = true
     return true
   end
   return false
@@ -119,7 +132,7 @@ function Player:facingCell()
 end
 
 function Player:walkPhase()
-  if not self.moving then return 0 end
+  if not self.moving and not self.stepLanded then return 0 end
   -- walk frame during the middle of each 16-frame animation cycle
   local p = (self.animClock or self.progress) % 16
   return (p >= 4 and p < 12) and 1 or 0
@@ -129,10 +142,13 @@ local SPIN_ORDER = { "down", "left", "up", "right" }
 
 function Player:draw(camX, camY)
   local py = self.py
-  -- ledge hops arc (set for 2 cells by the ledge handler); surfing bobs
+  -- ledge hops arc (set for 2 cells by the ledge handler); surfing bobs.
+  -- hopFrames counts down in Player:update (fixed step), never here.
   if self.hopFrames and self.hopFrames > 0 then
-    self.hopFrames = self.hopFrames - 1
-    local t = 1 - self.hopFrames / (self.hopTotal or 32)
+    local total = self.hopTotal or 32
+    -- update runs before draw, so remaining N means N steps already
+    -- consumed this hop → t matches the old draw-side post-decrement phase
+    local t = 1 - self.hopFrames / total
     py = py - math.floor(10 * math.sin(t * math.pi) + 0.5)
     -- the shadow stays on the ground under the jumper: one 8x8 tile
     -- mirrored into a 2x2 block (normal/XFLIP/YFLIP/both) whose top-left
diff --git a/tests/mod_graphics_tests.lua b/tests/mod_graphics_tests.lua
index cb60985d..ff306751 100644
--- a/tests/mod_graphics_tests.lua
+++ b/tests/mod_graphics_tests.lua
@@ -620,6 +620,22 @@ check(PaletteFX.pal({ palettes = nil }, "ROUTE") == gbc.palettes.ROUTE,
       "RED++ still has ROUTE (aliased from VIRIDIAN)")
 check(PaletteFX.effectiveColors(gbc.palettes.MEWMON) == gbc.palettes.MEWMON,
       "RED++ passes zone colors through like GBC")
+-- issue #84: CELADON_DINER shares LOBBY block 29 (table top) with
+-- CELADON_MART_ROOF (#52); both need the $37->$5a BROWN alias
+do
+  local aliases = PaletteFX.TILE_ALIASES
+  local roof = aliases and aliases.CELADON_MART_ROOF
+  local diner = aliases and aliases.CELADON_DINER
+  check(roof ~= nil and diner ~= nil,
+        "CELADON_MART_ROOF and CELADON_DINER both have TILE_ALIASES")
+  check(diner == roof,
+        "diner reuses the same lobby table-top alias as the mart roof")
+  local al = diner and diner[1]
+  check(al and al.block == 29 and al.tile == 0x37 and al.alias == 0x5a
+        and al.group == 5 and al.cells[5] and al.cells[6]
+        and al.cells[9] and al.cells[10],
+        "lobby table-top alias remaps block 29 cells 5/6/9/10")
+end
 -- issue #128: RED++'s gbc pack is Red-derived; Blue must keep ROM LOGO1
 -- (and the Blue-only SLOTS* rows) so the title ribbon is blue, not red
 do
diff --git a/tests/mod_ui_tests.lua b/tests/mod_ui_tests.lua
index 7eb4f73b..5db78621 100644
--- a/tests/mod_ui_tests.lua
+++ b/tests/mod_ui_tests.lua
@@ -295,7 +295,8 @@ check(bm.screenId == "BindingsMenu",
 check(#bm.items == 8, "one row per logical button")
 check(bm.items[1].label == "UP" and bm.items[1].right == "UP"
   and bm.items[5].label == "A" and bm.items[5].right == "Z"
-  and bm.items[7].label == "START" and bm.items[7].right == "ESCAPE",
+  and bm.items[7].label == "START" and bm.items[7].right == "ESCAPE"
+  and bm.items[8].label == "SELECT" and bm.items[8].right == "TAB/BACK",
   "with no rebind the rows mirror the fixed map")
 check(cbGame.save.options.bindings == nil,
   "opening the screen alone writes nothing")
diff --git a/tests/parity_I_M.lua b/tests/parity_I_M.lua
index 1c4d1d33..af47d595 100644
--- a/tests/parity_I_M.lua
+++ b/tests/parity_I_M.lua
@@ -432,6 +432,50 @@ check(actsFaint.fly and actsFaint.cut and actsFaint.surf and actsFaint.strength,
       "fainted mon still lists FLY/CUT/SURF/STRENGTH in the party submenu")
 popToOW()
 
+-- ===========================================================================
+-- #83: FLY/TELEPORT use CheckIfInOutsideMap (OVERWORLD + PLATEAU), so the
+-- outdoor strip between Victory Road and the Elite Four / Indigo Plateau
+-- building allows Fly like any other outdoor overworld map.
+-- ===========================================================================
+Game.save.party = { mkMon("AERODACTYL", "FLY", "TELEPORT") }
+Game.save.inventory = { THUNDERBADGE = true }
+ow = pushOW("INDIGO_PLATEAU", 10, 5, "down")
+eq(ow.map.def.tileset, "PLATEAU", "Indigo Plateau outdoor uses PLATEAU tileset")
+local pmIndigo = PartyMenu.new(Game)
+Game.stack:push(pmIndigo)
+frame({ "a" })
+local actsIndigo = submenuActions(pmIndigo)
+check(actsIndigo.fly, "FLY listed on Indigo Plateau outdoor (PLATEAU)")
+check(actsIndigo.escape, "TELEPORT listed on Indigo Plateau outdoor (PLATEAU)")
+popToOW()
+
+ow = pushOW("ROUTE_23", 10, 6, "down")
+eq(ow.map.def.tileset, "PLATEAU", "Route 23 uses PLATEAU tileset")
+local pmR23 = PartyMenu.new(Game)
+Game.stack:push(pmR23)
+frame({ "a" })
+check(submenuActions(pmR23).fly, "FLY listed on Route 23 (PLATEAU)")
+popToOW()
+
+-- Indoors at the lobby still blocks FLY/TELEPORT (MART tileset)
+ow = pushOW("INDIGO_PLATEAU_LOBBY", 7, 8, "down")
+check(ow.map.def.tileset ~= "OVERWORLD" and ow.map.def.tileset ~= "PLATEAU",
+      "Indigo lobby is not an outside tileset")
+local pmLobby = PartyMenu.new(Game)
+Game.stack:push(pmLobby)
+frame({ "a" })
+local actsLobby = submenuActions(pmLobby)
+check(not actsLobby.fly, "FLY omitted inside Indigo Plateau lobby")
+check(not actsLobby.escape, "TELEPORT omitted inside Indigo Plateau lobby")
+popToOW()
+
+-- restore fainted field-move mon for the STRENGTH/SURF cases below
+Game.save.party = { fainted }
+Game.save.inventory = {
+  THUNDERBADGE = true, CASCADEBADGE = true,
+  RAINBOWBADGE = true, SOULBADGE = true,
+}
+
 -- STRENGTH activation from a fainted user (name text + strengthActive)
 ow = pushOW("SEAFOAM_ISLANDS_1F", 17, 10, "right")
 clearCaptured()
diff --git a/tests/parity_bike_walk_anim.lua b/tests/parity_bike_walk_anim.lua
new file mode 100644
index 00000000..1a688825
--- /dev/null
+++ b/tests/parity_bike_walk_anim.lua
@@ -0,0 +1,97 @@
+-- Regression: bike / desynced walk steps must not flash stand on land (issue #82).
+--
+-- walkPhase used to return 0 whenever moving was false.  A step clears
+-- moving on its final FixedStep tick, so the draw after landing snapped
+-- to stand even when animClock was mid walk-cycle.  Bike steps are 8
+-- frames, so they land at animClock % 16 == 8 (walk) every tile — always
+-- stuttery.  Walking after a bike ride inherits a desynced animClock and
+-- hit the same stand flash "sometimes."
+--
+-- Self-contained; run via `luajit tests/parity_bike_walk_anim.lua`.
+package.path = "./?.lua;./?/init.lua;" .. package.path
+if not _G.love then _G.love = require("tests.love_stub") end
+
+local Data = require("src.core.Data")
+if not (Data.maps and Data.maps.PALLET_TOWN) then Data:load() end
+
+local Player = require("src.world.Player")
+local S = require("tests.harness").suite("parity bike walk anim")
+local check, eq = S.check, S.eq
+
+local function makePlayer(onBike)
+  local p = Player.new(Data, 5, 5, "down")
+  p.onBike = onBike
+  if onBike then
+    p.stepFramesCur = p.bikeStepFrames or 8
+  else
+    p.stepFramesCur = p.stepFrames or 16
+  end
+  p.animClock = 0
+  return p
+end
+
+local function startStep(p)
+  p.moving = true
+  p.progress = 0
+  p.targetX, p.targetY = p.cellX, p.cellY + 1
+end
+
+-- --- bike: every land frame mid-cycle must stay walk ---
+local bike = makePlayer(true)
+local landPhases = {}
+for tile = 1, 4 do
+  startStep(bike)
+  local stepLen = bike.stepFramesCur
+  for _ = 1, stepLen do
+    local done = bike:update()
+    if done then
+      landPhases[#landPhases + 1] = bike:walkPhase()
+      eq(bike.moving, false, "bike step clears moving on land")
+      check(bike.stepLanded, "bike land latches stepLanded for draw")
+    end
+  end
+end
+-- lands at animClock 8, 16, 24, 32 → %16 = 8, 0, 8, 0
+-- walk band is 4..11, so lands at 8 must be phase 1; at 0 must be phase 0
+eq(landPhases[1], 1, "bike land at animClock%16==8 keeps walk pose")
+eq(landPhases[2], 0, "bike land at animClock%16==0 is stand (in-band)")
+eq(landPhases[3], 1, "bike land at animClock%16==8 keeps walk pose again")
+eq(landPhases[4], 0, "bike land at animClock%16==0 is stand again")
+
+-- continuous bike phases across two tiles: no forced stand in the walk band
+bike = makePlayer(true)
+local phases = {}
+for _ = 1, 2 do
+  startStep(bike)
+  for _ = 1, bike.stepFramesCur do
+    bike:update()
+    phases[#phases + 1] = bike:walkPhase()
+  end
+end
+-- frames 4..11 of animClock are walk; across 16 ticks that is indices 4..11
+for i = 4, 11 do
+  eq(phases[i], 1, "bike continuous walk band has no stand flash at " .. i)
+end
+
+-- idle after land: next update drops the latch → stand
+bike = makePlayer(true)
+startStep(bike)
+for _ = 1, bike.stepFramesCur do bike:update() end
+eq(bike:walkPhase(), 1, "latched land frame still walk")
+bike:update()
+eq(bike.stepLanded, false, "idle update clears stepLanded")
+eq(bike:walkPhase(), 0, "truly idle is stand")
+
+-- --- walk after desynced animClock (post-bike): land must not force stand ---
+local walk = makePlayer(false)
+walk.animClock = 8 -- leftover from a bike half-cycle
+startStep(walk)
+local lastPhase
+for _ = 1, walk.stepFramesCur do
+  walk:update()
+  lastPhase = walk:walkPhase()
+end
+eq(walk.animClock % 16, 8, "desynced walk lands mid walk-cycle")
+eq(lastPhase, 1, "desynced walk land keeps walk pose (no post-bike stutter)")
+
+S.finish()
diff --git a/tests/parity_gbcfx.lua b/tests/parity_gbcfx.lua
index 585ae082..996c20ab 100644
--- a/tests/parity_gbcfx.lua
+++ b/tests/parity_gbcfx.lua
@@ -80,5 +80,46 @@ check(drawn and drawn[1] == canvas and drawn[2] == 0 and drawn[3] == 0,
 
 GBCFX.setLevel(0)
 
+-- issue #136: Android/iOS refuse GBC FX (shader soft-bricks the APK)
+check(GBCFX.isSupported(), "desktop / headless stub supports GBC FX")
+local prevSystem = love.system
+love.system = { getOS = function() return "Android" end }
+check(not GBCFX.isSupported(), "Android reports GBC FX unsupported")
+GBCFX.setLevel(3)
+eq(GBCFX.level, 0, "setLevel forces OFF on Android")
+eq(GBCFX.cycle(), 0, "cycle stays OFF on Android")
+local opts = { gbcfx = 4 }
+check(GBCFX.applyOptions(opts) == true,
+      "applyOptions reports a cleared persisted level on Android")
+eq(opts.gbcfx, 0, "applyOptions clears opts.gbcfx on Android")
+eq(GBCFX.level, 0, "applyOptions leaves level OFF on Android")
+check(not GBCFX.active(), "active() is false on Android")
+eq(GBCFX.shader(), nil, "shader() is nil on Android")
+love.system = { getOS = function() return "iOS" end }
+check(not GBCFX.isSupported(), "iOS reports GBC FX unsupported")
+love.system = prevSystem
+check(GBCFX.isSupported(), "support restores when OS stub is removed")
+-- desktop path still applies a level after leaving the mobile gate
+GBCFX.applyOptions({ gbcfx = 2 })
+eq(GBCFX.level, 2, "applyOptions still sets levels on desktop")
+GBCFX.setLevel(0)
+
+-- Options menu hides the GBC FX row on Android
+local OptionsMenu = require("src.ui.OptionsMenu")
+love.system = { getOS = function() return "Android" end }
+local om = OptionsMenu.new({
+  data = { rulesets = {}, constants = {} },
+  save = { options = {} },
+  stack = { pop = function() end },
+  input = { wasPressed = function() return false end },
+  modStatus = { available = {} },
+})
+local hasGbc = false
+for _, row in ipairs(om.rows) do
+  if row.id == "gbcfx" then hasGbc = true end
+end
+check(not hasGbc, "Options menu omits GBC FX on Android")
+love.system = prevSystem
+
 -- === summary ===
 S.finish()
diff --git a/tests/parity_move_swap.lua b/tests/parity_move_swap.lua
new file mode 100644
index 00000000..7f4c0996
--- /dev/null
+++ b/tests/parity_move_swap.lua
@@ -0,0 +1,129 @@
+-- Parity / regression for #73: Gen 1 fight-menu SELECT reorders moves.
+--
+-- Select marks a slot, move the cursor, Select (or A) swaps. Defaults:
+-- Tab / either Shift / gamepad Back. Self-contained; also picked up by
+-- tests/run_tests.lua's parity_* glob.
+package.path = "./?.lua;./?/init.lua;" .. package.path
+if not _G.love then _G.love = require("tests.love_stub") end
+
+local Data = require("src.core.Data")
+if not (Data.pokemon and Data.pokemon.RATTATA) then Data:load() end
+local TypeChart = require("src.battle.TypeChart")
+TypeChart.load(Data)
+
+local Pokemon = require("src.pokemon.Pokemon")
+local BattleState = require("src.battle.BattleState")
+local Input = require("src.core.Input")
+local S = require("tests.harness").suite("parity move swap")
+local check, eq = S.check, S.eq
+
+local function freshGame()
+  local mon = Pokemon.new(Data, "NIDORAN_M", 8)
+  mon.moves = {
+    { id = "TACKLE", pp = 35 },
+    { id = "LEER", pp = 30 },
+    { id = "HORN_ATTACK", pp = 25 },
+    { id = "POISON_STING", pp = 35 },
+  }
+  return {
+    data = Data,
+    input = Input,
+    save = {
+      party = { mon },
+      player = { name = "RED" },
+      inventory = {},
+      options = {},
+      pokedex = { seen = {}, owned = {} },
+      flags = {},
+      money = 0,
+    },
+    stack = { push = function() end, pop = function() end, top = function() end },
+  }
+end
+
+local function tapKey(battle, key)
+  Input:keypressed(key)
+  Input:step()
+  battle:update(0)
+  Input:keyreleased(key)
+end
+
+local function tapPad(battle, button)
+  Input:gamepadpressed(nil, button)
+  Input:step()
+  battle:update(0)
+  Input:gamepadreleased(nil, button)
+end
+
+-- Default Select sources all edge the logical select button.
+do
+  Input:init()
+  for _, key in ipairs({ "tab", "rshift", "lshift" }) do
+    Input:reset()
+    Input:keypressed(key)
+    Input:step()
+    check(Input:wasPressed("select"), key .. " maps to select")
+  end
+  Input:reset()
+  Input:gamepadpressed(nil, "back")
+  Input:step()
+  check(Input:wasPressed("select"), "gamepad back maps to select")
+end
+
+-- Fight menu: Select, move, Select swaps slots 1 and 2.
+do
+  Input:init()
+  local game = freshGame()
+  local battle = BattleState.newWild(game, "PIDGEY", 5)
+  battle.phase = "moveSelect"
+  battle.moveIndex = 1
+  battle.moveSwapIndex = nil
+  local a = battle.player.curMoves[1].id
+  local b = battle.player.curMoves[2].id
+  tapKey(battle, "tab")
+  eq(battle.moveSwapIndex, 1, "first Select marks the current slot")
+  tapKey(battle, "down")
+  eq(battle.moveIndex, 2, "cursor moved to slot 2")
+  tapKey(battle, "tab")
+  check(battle.moveSwapIndex == nil, "second Select clears the mark")
+  eq(battle.player.curMoves[1].id, b, "slot 1 holds the former slot 2 move")
+  eq(battle.player.curMoves[2].id, a, "slot 2 holds the former slot 1 move")
+  eq(battle.player.mon.moves[1].id, b, "party moves table stays in sync")
+end
+
+-- Same reorder via gamepad Back (SDL "back" = controller Select/View).
+do
+  Input:init()
+  local game = freshGame()
+  local battle = BattleState.newWild(game, "PIDGEY", 5)
+  battle.phase = "moveSelect"
+  battle.moveIndex = 1
+  battle.moveSwapIndex = nil
+  local a = battle.player.curMoves[1].id
+  local b = battle.player.curMoves[2].id
+  tapPad(battle, "back")
+  tapPad(battle, "dpdown")
+  tapPad(battle, "back")
+  eq(battle.player.curMoves[1].id, b, "pad Select swaps slot 1")
+  eq(battle.player.curMoves[2].id, a, "pad Select swaps slot 2")
+end
+
+-- A confirms a pending swap (bag-style), without starting the turn.
+do
+  Input:init()
+  local game = freshGame()
+  local battle = BattleState.newWild(game, "PIDGEY", 5)
+  battle.phase = "moveSelect"
+  battle.moveIndex = 1
+  battle.moveSwapIndex = nil
+  local a = battle.player.curMoves[1].id
+  local b = battle.player.curMoves[2].id
+  tapKey(battle, "tab")
+  tapKey(battle, "down")
+  tapKey(battle, "z") -- A
+  eq(battle.phase, "moveSelect", "A completes a pending swap without attacking")
+  eq(battle.player.curMoves[1].id, b, "A-confirm swapped slot 1")
+  eq(battle.player.curMoves[2].id, a, "A-confirm swapped slot 2")
+end
+
+S.finish()
diff --git a/tests/parity_tower_heal_pad.lua b/tests/parity_tower_heal_pad.lua
new file mode 100644
index 00000000..8031c3fe
--- /dev/null
+++ b/tests/parity_tower_heal_pad.lua
@@ -0,0 +1,98 @@
+-- Parity test: Pokemon Tower 5F purified-zone heal pad (#81).
+--
+-- pokered scripts/PokemonTower5F.asm PokemonTower5FDefaultScript:
+--   coords (10,8)/(11,8)/(10,9)/(11,9); CheckAndSetEvent
+--   EVENT_IN_PURIFIED_ZONE so the heal fires once until the player
+--   leaves; HealParty -> GBFadeOutToWhite -> Delay3 x2 ->
+--   GBFadeInFromWhite -> _PokemonTower5FPurifiedZoneText (no heal jingle).
+--
+-- Self-contained; run via `luajit tests/parity_tower_heal_pad.lua`.
+package.path = "./?.lua;./?/init.lua;" .. package.path
+if not _G.love then _G.love = require("tests.love_stub") end
+local S = require("tests.harness").suite("parity tower heal pad")
+local check, eq = S.check, S.eq
+
+local M = dofile("data/scripts/story3.lua")
+local tower = M.POKEMON_TOWER_5F
+check(tower ~= nil and type(tower.onStep) == "function",
+      "POKEMON_TOWER_5F has an onStep heal-pad trigger")
+
+local function cmds(rows)
+  local out = {}
+  for _, row in ipairs(rows) do out[#out + 1] = row[1] end
+  return out
+end
+
+local function gameWith(flags)
+  return { save = { flags = flags or {} } }
+end
+
+local function owWith()
+  local ran = {}
+  return {
+    runner = {
+      isRunning = function() return false end,
+      run = function(_, rows) ran[#ran + 1] = rows end,
+    },
+  }, ran
+end
+
+-- ---- 1. pad coords + leave clears latch --------------------------------
+do
+  local game = gameWith()
+  local ow, ran = owWith()
+  check(not tower.onStep(game, ow, 9, 8), "off-pad X does not heal")
+  check(not tower.onStep(game, ow, 10, 7), "off-pad Y does not heal")
+  eq(#ran, 0, "no script off the pad")
+end
+
+do
+  local game = gameWith()
+  local ow, ran = owWith()
+  check(tower.onStep(game, ow, 10, 8), "first step on (10,8) heals")
+  check(game.save.flags.EVENT_IN_PURIFIED_ZONE, "latches EVENT_IN_PURIFIED_ZONE")
+  eq(#ran, 1, "heal script runs once")
+
+  check(tower.onStep(game, ow, 11, 9),
+        "staying on the pad still consumes the step (BIT_NO_BATTLES)")
+  eq(#ran, 1, "heal does not re-fire while still on the pad")
+
+  check(not tower.onStep(game, ow, 12, 9), "stepping off clears and returns false")
+  check(not game.save.flags.EVENT_IN_PURIFIED_ZONE,
+        "EVENT_IN_PURIFIED_ZONE resets off the pad")
+
+  check(tower.onStep(game, ow, 11, 8), "re-entering the pad heals again")
+  eq(#ran, 2, "a fresh visit runs the heal script again")
+end
+
+-- ---- 2. all four pad tiles trigger -------------------------------------
+for _, cell in ipairs({ { 10, 8 }, { 11, 8 }, { 10, 9 }, { 11, 9 } }) do
+  local game = gameWith()
+  local ow, ran = owWith()
+  check(tower.onStep(game, ow, cell[1], cell[2]),
+        ("pad tile (%d,%d) heals"):format(cell[1], cell[2]))
+  eq(#ran, 1, ("pad tile (%d,%d) queued a script"):format(cell[1], cell[2]))
+end
+
+-- ---- 3. heal sequence matches pokered order ----------------------------
+do
+  local game = gameWith()
+  local ow, ran = owWith()
+  tower.onStep(game, ow, 10, 9)
+  local rows = ran[1]
+  check(rows ~= nil, "heal rows captured")
+  local sequence = table.concat(cmds(rows), ",")
+  eq(sequence, "heal_party,fade,wait,wait,fade,show_text",
+     "Tower pad sequence is heal → fade out → Delay3×2 → fade in → text")
+  eq(rows[2][3], "white", "fades out to white")
+  eq(rows[3][2], 3, "first Delay3 is 3 frames")
+  eq(rows[4][2], 3, "second Delay3 is 3 frames")
+  eq(rows[5][3], "white", "fades in from white")
+  eq(rows[6][2], "_PokemonTower5FPurifiedZoneText",
+     "shows the purified-zone text")
+  for _, row in ipairs(rows) do
+    check(row[1] ~= "play_once", "no Music_PkmnHealed on the Tower pad")
+  end
+end
+
+S.finish()
diff --git a/tests/parity_trainer_sight.lua b/tests/parity_trainer_sight.lua
index 0d18e24d..9dbb9ee7 100644
--- a/tests/parity_trainer_sight.lua
+++ b/tests/parity_trainer_sight.lua
@@ -169,4 +169,53 @@ do
         "tile behind the trainer never engages (CheckPlayerIsInFrontOfSprite)")
 end
 
+-- === (4) Route 9 Bug Catcher: 4-tiles-north screen Y $fc quirk ===
+-- Object 7 = SPRITE_YOUNGSTER at (22,2), STAY DOWN, OPP_BUG_CATCHER
+-- (data/maps/objects/Route9.asm); header range 4 (Route9TrainerHeader6).
+-- A ledge sits on (22,5); the walkable tile below it is (22,6) at cell
+-- distance 4.  Cell math would engage, but pokered's unsigned screen-Y
+-- distance with SPRITESTATEDATA1_YPIXELS=$fc is $c0 > range<<4 ($40), so
+-- the trainer must not challenge through that ledge (GitHub #76).
+local ROUTE9_BUG_CATCHER = 7
+
+local function freshRoute9(px, py, facing)
+  while Game.stack:top() do Game.stack:pop() end
+  Game.save = SaveData.newGame()
+  Input:init()
+  OW.engaging = false
+  OW.emote = nil
+  Game.stack:push(OW, "ROUTE_9", px, py, facing)
+  local ow = Game.stack:top()
+  local trainer
+  for _, npc in ipairs(ow.npcs) do
+    if npc.def.index == ROUTE9_BUG_CATCHER then trainer = npc end
+  end
+  return ow, trainer
+end
+
+do
+  local ow, trainer = freshRoute9(22, 6, "up")
+  check(trainer ~= nil and trainer.cellX == 22 and trainer.cellY == 2,
+        "Route 9 Bug Catcher stands at (22,2)")
+  eq(trainer.facing, "down", "Bug Catcher faces down (STAY DOWN)")
+  local header = Data:trainerHeader("Route9", ROUTE9_BUG_CATCHER)
+  eq(header and header.range, 4, "Bug Catcher sight range is 4")
+
+  for _ = 1, 10 do frame(ow) end
+  check(not ow.engaging,
+        "distance 4 south of DOWN trainer: no engage (screen Y $fc quirk)")
+
+  -- same plateau, still in pixel range: distance 2 and 3 must engage
+  local ow2, t2 = freshRoute9(22, 4, "up")
+  local guard = 0
+  while not ow2.engaging and guard < 10 do guard = guard + 1; frame(ow2) end
+  check(ow2.engaging and t2.cellY == 2,
+        "distance 2 on the upper plateau still engages")
+
+  local ow3 = freshRoute9(22, 3, "up")
+  guard = 0
+  while not ow3.engaging and guard < 10 do guard = guard + 1; frame(ow3) end
+  check(ow3.engaging, "distance 3 on the upper plateau still engages")
+end
+
 S.finish()
diff --git a/tests/run_tests.lua b/tests/run_tests.lua
index 738d39fb..83edcb96 100644
--- a/tests/run_tests.lua
+++ b/tests/run_tests.lua
@@ -1072,6 +1072,81 @@ do
   mh:performMove(mh.player, mh.enemy, { id = "DOUBLESLAP", pp = 10 })
   check(hasText(mh, "Hit the enemy\n5 times!"),
         "player multi-hit uses _MultiHitText")
+  -- #85: multi-hit replays PlayMoveAnimation per strike (pokered
+  -- GetPlayerAnimationType loop), interleaved with each HP drain
+  do
+    local anims, seq = 0, {}
+    for _, r in ipairs(mh.queue) do
+      if r.anim == "DOUBLESLAP" then
+        anims = anims + 1
+        seq[#seq + 1] = "anim"
+      elseif r.drain then
+        seq[#seq + 1] = "drain"
+      end
+    end
+    eq(anims, 5, "multi-hit queues the move animation once per hit")
+    eq(table.concat(seq, ","),
+       "anim,drain,anim,drain,anim,drain,anim,drain,anim,drain",
+       "multi-hit interleaves anim + drain per strike")
+    for _, r in ipairs(mh.queue) do
+      if r.anim == "DOUBLESLAP" then
+        check(r.hit ~= nil, "each multi-hit anim carries hit blink/sfx")
+      end
+    end
+  end
+  -- #85: crit / effectiveness reprint each strike (.moveDidNotMiss
+  -- before the GetPlayerAnimationType loop-back).  DOUBLE_KICK is a
+  -- fixed 2-hit Fighting move -- SE vs Normal SNORLAX.
+  do
+    local function countText(b, s)
+      local n = 0
+      for _, it in ipairs(b.queue) do
+        if it.text and it.text:find(s, 1, true) then n = n + 1 end
+      end
+      return n
+    end
+    Game.save.party = { Pokemon.new(Data, "BULBASAUR", 20) }
+    local mhk = BattleState.newWild(Game, "SNORLAX", 40)
+    mhk.rng = mkseq({ 0, 255, 255 }) -- hit, no crit, max roll
+    mhk:performMove(mhk.player, mhk.enemy, { id = "DOUBLE_KICK", pp = 10 })
+    eq(countText(mhk, "It's super\neffective!"), 2,
+       "multi-hit prints effectiveness once per strike")
+    local seq = {}
+    for _, r in ipairs(mhk.queue) do
+      if r.anim == "DOUBLE_KICK" then seq[#seq + 1] = "anim"
+      elseif r.drain then seq[#seq + 1] = "drain"
+      elseif r.text == "It's super\neffective!" then seq[#seq + 1] = "se"
+      elseif r.text and r.text:find("times!", 1, true) then seq[#seq + 1] = "count"
+      end
+    end
+    eq(table.concat(seq, ","), "anim,drain,se,anim,drain,se,count",
+       "multi-hit queues SE text between strikes, count after")
+
+    local Runtime = require("src.mods.Runtime")
+    local Hooks = require("src.mods.Hooks")
+    local Events = require("src.mods.Events")
+    local savedE, savedH = Runtime.events, Runtime.hooks
+    local hooks = Hooks.new()
+    Runtime.install(Events.new(), hooks)
+    local unsub = hooks:wrap("battle.crit", function() return true end)
+    local mhc = BattleState.newWild(Game, "SNORLAX", 40)
+    mhc.rng = mkseq({ 0, 255 }) -- acc, damage; crit from the hook
+    mhc:performMove(mhc.player, mhc.enemy, { id = "DOUBLE_KICK", pp = 10 })
+    eq(countText(mhc, "Critical hit!"), 2,
+       "multi-hit prints Critical hit! once per strike")
+    local cseq = {}
+    for _, r in ipairs(mhc.queue) do
+      if r.anim == "DOUBLE_KICK" then cseq[#cseq + 1] = "anim"
+      elseif r.drain then cseq[#cseq + 1] = "drain"
+      elseif r.text == "Critical hit!" then cseq[#cseq + 1] = "crit"
+      elseif r.text == "It's super\neffective!" then cseq[#cseq + 1] = "se"
+      end
+    end
+    eq(table.concat(cseq, ","), "anim,drain,crit,se,anim,drain,crit,se",
+       "crit then effectiveness follow each multi-hit drain")
+    unsub()
+    Runtime.install(savedE, savedH)
+  end
   Game.save.party = { Pokemon.new(Data, "SNORLAX", 30) }
   local mh2 = BattleState.newWild(Game, "RATTATA", 5)
   mh2.rng = mkseq({ 7, 0, 255, 255 })
@@ -2611,6 +2686,43 @@ do
                     tostring(c[3]), tostring(c[4])))
   end
 end
+
+-- == issue #4: ledge hop countdown is fixed-step, not draw-rate ==
+-- hopFrames used to decrement inside Player:draw, so >59fps ended the
+-- arc early and <59fps stretched it. Countdown belongs in update().
+do
+  local Player = require("src.world.Player")
+  local p = Player.new(Data, 5, 6, "down")
+  p.hopFrames, p.hopTotal = 32, 32
+  p:draw(0, 0)
+  p:draw(0, 0)
+  p:draw(0, 0)
+  eq(p.hopFrames, 32, "draw does not consume hopFrames")
+  for _ = 1, 10 do p:update() end
+  eq(p.hopFrames, 22, "ten fixed updates consume ten hopFrames")
+  for _ = 1, 22 do p:update() end
+  eq(p.hopFrames, 0, "hop expires after hopTotal fixed updates")
+  p:update()
+  eq(p.hopFrames, 0, "hopFrames stays at 0 once expired")
+end
+
+-- == issue #4: tile anim tick accumulates wall-clock into 60Hz steps ==
+do
+  local TileRenderer = require("src.render.TileRenderer")
+  TileRenderer.setSpinning(true)
+  local before = TileRenderer.spinBlurActive()
+  for _ = 1, 8 do TileRenderer.tick(1 / 60) end
+  check(before ~= TileRenderer.spinBlurActive(),
+        "tick(1/60) advances water/spinner clock at fixed 60Hz")
+  local mid = TileRenderer.spinBlurActive()
+  TileRenderer.tick(1 / 120)
+  eq(TileRenderer.spinBlurActive(), mid,
+     "sub-frame dt does not advance the tile anim clock")
+  TileRenderer.tick(1 / 120)
+  -- second half-frame completes one step; phase may or may not flip
+  -- (8-tick blur period), but the clock must have accepted the step
+  TileRenderer.setSpinning(false)
+end
 end
 
 -- ================= BUGS.md batch: border-tree =================