According to development sources who wish to remain anonymous, Nintendo DS software can access the Game Boy Advance cartridge slot. However, our sources indicate that this feature seems intended mainly for hardware purposes, not for running a DS game and a GBA game at the same time. According to development sources who wish to remain anonymous, Nintendo DS software can access the Game Boy Advance cartridge slot. However, our sources indicate that this feature seems intended mainly for hardware purposes, not for running a DS game and a GBA game at the same time. This would still allow for some interesting combinations, and it means that DS games may still be able to use GBA cartridge features, such as the motion sensor in the upcoming Wario Ware sequel.