 In 1992, Ocean Software ported the game to home gaming systems, including the Amiga, Atari ST, Commodore 64 and ZX Spectrum. Due to the hardware limitations of the various systems, the graphics and sounds of the ports differ from the original arcade version; for example, the ZX Spectrum version did not allow the aliens'limbs to be shot off. Some home versions use a light gun peripheral to simulate the control scheme of the arcade format. Taito's Sega Master System port uses the Sega Light Phaser accessory. The Amiga and Atari ST versions are one of the few games to use the Trojan Light Gun. In developing the Amiga conversion, the team video taped the arcade machine in operation as a reference for the graphics, pausing the video at relevant spots to take notes before recreating them. Programmer Damien Stones spent four months on the ZX Spectrum version. He kept the graphical detail of the backgrounds simple to allow for more action in the foreground. Taking into account the system's lower capabilities compared to the arcade hardware, Stones designed the game to handle a large number of on-screen sprites. As a result, Space Gun becomes more efficient the more action occurs on the screen, but will slow down during lulls in the game. In 2005, Space Gun was included in the compilation title Taito Legends for the PlayStation 2, personal computer and Xbox.
