Nickelodeon Jimmy Neutron: Boy Genius - Attack of the Twonkies ROM Download for GameCube (GameCube). Nickelodeon Jimmy Neutron: Boy Genius - Attack of the Twonkies game is available to play online and download only on Roms Games. Nickelodeon Jimmy Neutron: Boy Genius - Attack of the Twonkies ROM for GameCube download requires an emulator to play the game offline. This Game is English (USA) Version and is the highest quality available.