Avenger
space invaders game for Commodore 64, 1982
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Use Control Port 1.
The player has to defend Earth from endless rows of attacking aliens.
Flying saucers can be shot for extra points.
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Some useful keyboard shortcuts
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[PAUSE] - stop/continue game
[F9] - quick load game state
[F12] - quick save game state (still stored after leaving the site)
[F10] - toggle performance meter
[F11] - toggle fullscreen mode
[ScrollLock] - quick switch control ports
[PageDown] - make a screenshot (320x200)