Mario & Sonic At The Olympic Winter Games (EU)(BAHAMUT) ROM Download for Nintendo DS (NDS). Mario & Sonic At The Olympic Winter Games (EU)(BAHAMUT) game is available to play online and download only on Roms Games. Mario & Sonic At The Olympic Winter Games (EU)(BAHAMUT) ROM for Nintendo DS download requires an emulator to play the game offline. This Game is English (USA) Version and is the highest quality available.