Pet Alien: An Intergalactic Puzzlepalooza ROM Download for Nintendo DS (NDS). Pet Alien: An Intergalactic Puzzlepalooza game is available to play online and download only on Roms Games. Pet Alien: An Intergalactic Puzzlepalooza 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.