ABM is a 1-playerMissile Command variant for the BBC Micro.

The player controls a central defense turret designed to protect the six surrounding cities located at the bottom of the screen. Rounds of incoming missiles, each more difficult than the last, come from above. Sometimes the missiles will split into many smaller pieces as they descend.

The player controls a target to try to shoot down the incoming dangers. The player has unlimited shots, but if their turret or all six cities are destroyed, it's game over.

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