: You'll need an emulator to play. Popular choices include VisualBoy Advance-M or MyOldBoy! for Android.
After extensive cross-referencing with obscure ROM hacking forums (notably PokeCommunity and ROMHacking.net archives), we have three plausible theories: 1636 pokemon fire red u squirrels rom extra quality
In the standard ROM, the intro (with Charizard and Venasaur) has visible color banding in the sky. The build replaces the sky gradient with a dithered 15-bit color map. The result is a smoother, “extra quality” visual, though it requires a more accurate emulator (mGBA or original hardware with a bright screen). : You'll need an emulator to play
In 2005, a developer for a now-defunct ROM editor called "AdvanceMap" hid debugging text inside a beta patch. When users applied a "Extra Quality" patch to Fire Red 1636, placeholder dialogue in Viridian Forest accidentally referenced "squirrels" as test NPCs. The phrase "Look, squirrels!" appeared if you interacted with a specific, normally hidden tile. This became a meme. In 2005, a developer for a now-defunct ROM