Amstrad CPC[edit]
Developed by Ocean Software under Taito America Corporation's license and released in 1988.
Atari ST[edit]
Developed by Ocean Software under Taito America Corporation's license and released in 1988.
Commodore 64/128[edit]
Developed by Ocean Software under Taito America Corporation's license and released in 1988; this version has smaller sprites than the arcade does, giving smaller targets for the player to fire on. It supports play by either a NEOS Mouse or a joystick plugged into Port 2 - and if the player should choose the second of these, they will be given two extra magazines of ammunition. The gameplay is simplified, with enemies following fewer entrance patterns and similar vehicles not stacking together; the enemies also do not flash before attacking, but their weapon fire will only inflict damage if the enemy is left unchecked. The player only gets one continue in this version.
Commodore Amiga[edit]
Developed by Ocean Software under Taito America Corporation's license and released in 1988.
FM Towns[edit]
Developed directly by Taito Corporation and released by Ving in 1990, but not outside of Japan.
MS-DOS[edit]
Developed by Taito America Corporation and released exclusively for the United States in 1989.
MSX[edit]
Developed by Ocean Software under Taito America Corporation's license and released in 1988.
Nintendo Famicom/NES[edit]
Developed directly by Taito Corporation and released in 1989; this version supports playing with either a joystick or the Famicom Light Gun. The Super Machine Gun is also depicted as a bullet with the text "FREE", but it has the same effect - and there may be an ambush before starting a stage, in which the player must defeat a troop of soldiers before proceeding to the actual stage.
PC Engine[edit]
Developed directly by Taito Corporation and released by NEC Avenue in 1990 but just in Japan.
Sega Master System[edit]
Developed directly by Taito Corporation for Sega and released in 1990; this version of the game was also, like a lot of earlier Sega Master System titles, licensed to Tec Toy for release in Brazil.
Sinclair ZX Spectrum[edit]
Developed by Ocean Software under Taito America Corporation's license and released in 1988.