Apple II[edit]
Developed by Alien Technology Group, and published by Taito in 1989. Optimized for better visual appearance on the Apple IIgs.
Atari 400/800/XL/XE[edit]
Developed by Atari and published in 1982. In a rare move for Atari, they released a different version for computers than they did for the Atari 5200. This version utilizes more of the available screen resolution.
Atari 5200[edit]
Developed by Atari and published in 1982. This version is not identical to the Atari home computer version, and retains a more faithful look to the arcade version.
Atari Lynx[edit]
Developed by Knight Technologies and published under license from Telegames Inc. in 1991.
Commodore 64[edit]
Developed by Alien Technology Group, and published by Taito in 1989.
Commodore Amiga[edit]
Developed by Alien Technology Group, and published by Taito in 1989. Possibly the best looking of the four Alien Tech conversions.
Game Boy[edit]
Developed by Nintendo and published in 1990. Contains cut scenes between stages that feature Mario in a different location around the world, dressed in native fashions, but otherwise has no connection to Mario.
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Screen
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American box
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Japanese box
NES[edit]
Published by Taito in 1991, and only in the United States. Qix was never released for play on the Famicom in Japan.
PC[edit]
Developed by Alien Technology Group, and published by Taito in 1989. Programmed to work with CGA, MCGA, and EGA/VGA graphics cards.