Nintendo NES (mar.1990) "Heavy Barrel [Model NES-HV]"
Nintendo Wii (feb.19, 2010) "Data East Arcade Classics [Model RVL-P-R26E]"
PC (MS-DOS, 5.25")
Apple II (1989)
LCD handheld game
(1988) released by Tiger Electronics : Contains 4 missions with a total of 18 levels of difficulty. You can choose between 3 different weapons : guns, missiles and cannons. Each weapon is intended for a specific enemy.