New Features

Features intentionally added beyond the original Pokémon Red, Blue, and Yellow games:

Survey zoom with connected-map rendering and configurable void fill
Perspective tilt mode for an HD-2D-style overworld
Multiple color modes, including original, SGB, advanced GBC, monochrome, and classic green
Optional GBC screen effects, including pixel grids, shadows, glare, and transparency
Performance presets and configurable FPS limits
Peer-to-peer link play for trades and battles between Red, Blue, and Yellow
Persistent custom options stored separately from game saves
Optional widescreen battle layout
Mobile touch controls with editable layouts, vibration, and orientation settings
Translation and custom font support
Built-in save editor for parties, boxes, items, events, maps, and Pokédex data
Tiled map editing tools for mod authors
Pokédex diploma and printer image exports
Community mod browser
Soft reset button combination
Keyboard and controller rebinding
Mod profiles with separate mod settings and save slots
Improved launcher and save editor UI, including background downloads and update checks
Direct-launch options for shortcuts, Steam entries, and handheld frontends
Custom boot branding

Actual approximations, and missing original behavior are documented separately in docs/known-differences.md.