Backwards Cannonball V1 (Human Cannonball Hack) ROM Download for Atari 2600 (A2600). Backwards Cannonball V1 (Human Cannonball Hack) game is available to play online and download only on Roms Games. Backwards Cannonball V1 (Human Cannonball Hack) ROM for Atari 2600 download requires an emulator to play the game offline. This Game is English (USA) Version and is the highest quality available.