aka: Critical Mass
Moby ID: 22413
ZX Spectrum Specs
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Description official description

Mankind has spread throughout the solar system into vast colonies, which are under alien threat. The bad guys have anti-matter machines capable of destroying the planets' power source. You must destroy these before they can reach Critical Mass.

Your journey involves travelling primarily to the east, in a hovering craft. It is rotated with left and right movements, and accelerated with forward motion. Laser and shield strength are limited and monitored on screen. Use them wisely, as hostile aliens and mines line the route. Get shot down and you re-emerge with a jet pack, now directed to the bay which can give you a new craft.

The force-field gates near the power planets are guarded by turrets which must be shot down. The mission then boils down the insides of the plant, which must be destroyed before its tractor beam has sucked you into the core.



Credits (ZX Spectrum version)

Coded by
Created by
Illustration & Design by



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  • MobyGames ID: 22413
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Contributors to this Entry

Game added by Martin Smith.

Additional contributors: Corn Popper, ZeTomes.

Game added May 19, 2006. Last modified October 16, 2023.