All three games in the Pokémon Stadium series contain the Game Boy Tower, a feature that allows the player to play the mainline Pokémon games from Generations I and II on the Nintendo 64 through a Transfer Pak. This is achieved through running a modified, emulated version of the Super Game Boy 2 BIOS within the data for the Pokémon Stadium games. Through the use of hacks, it is possible to make the Game Boy Tower run other Game Boy and Game Boy Color games as if on a Super Game Boy 2, complete with custom borders and palettes for titles that support such features. However, saving is disabled due to the Pokémon Stadium games not being equipped to run these cartridges in the normal course of play.