"1636 - Pokemon Fire Red (U)(Squirrels)" is a specific digital copy (ROM) of the 2004 Game Boy Advance game, Pokémon FireRed . It is widely considered the industry standard for ROM hacking because it is a clean "dump" of the original Why "Squirrels"? Version 1.0 (v1.0): Most high-quality Pokémon fan games—like Pokémon Unbound Radical Red —are built specifically for version 1.0 of FireRed. The "Squirrels" Name: