Do Gameboy color games work in a Nintendo DS?
Ahem. For the Nintendo DS, and Nintendo DS Lite Systems, on the Gameboy slot (Slot-2) only Gameboy Advance games can be played. Gameboy and Gameboy Color can’t be played. If you are sure he was playing GB Color or GB games, then he must’ve rigged it. But officially and for surely, it only plays GB A (Gameboy Advance) games.