Cray 5 (S) (1987) - Amstrad CPC - Shoot 'Em Up, Sci-Fi

An asteroid colony has been struck by a meteor, and the CRAY-5 supercomputer which controls the colony's atmosphere has been damaged. The only way to save the colony is to activate thirteen interrupters scattered around nine zones of the complex within a time limit. You will need to collect keys in order to unlock doors within the complex; however, there are three types of door, and only the correct type of key will unlock them. Other hazards include magnets, spikes and walls marked with a skull and crossbones symbol, all of which drain your energy if you touch them.