Editing Alien Syndrome (section)

==Ports==
The game was later ported to the Sega Master System (1988), Amiga (1988), Atari ST, ZX Spectrum (1989), Amstrad CPC, Commodore 64 (1988), Famicom (1988), Nintendo Entertainment System (1989), published by Tengen), and the Sega Game Gear (1992).

The game was also ported with updated graphics and sound for the PS2 as part of the Sega Ages re-release program, and included in US version of the Sega Classics Collection (It was removed from the European version to receive a lower age certificate). This version has updated controls, adding the use of both analog sticks, similar to the gameplay seen in ''Robotron: 2084'' and ''Smash TV''.

A sequel of the same name, ''Alien Syndrome'', was released for Wii and PSP on July 24, 2007.