A conversion of Spectrum's popular game, Jetpack, this was "officially not released". This game was abandoned by Ultimate (the would-be publishers) and found its way into the wild as Bac Pac, Jetpack, Jet Pack, Critherman and Bak Pakker on releases from Stonyware and others. It would later be released by Sipe and Alga Soft in Italy under the names listed above as well as Base Alpha, Fly Man and Rocket Man.