Choplifter

helicopter shoot'em up game for Commodore 64, 1982

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Use Control Port 1.

Choplifter! is a side-scrolling action/arcade game that puts the player
in command of an attack chopper. The mission: Go behind enemy lines
and rescue up to 64 hostages. However, the chopper can only carry
16 passengers at a time, so several rescue attempts must be made
to rescue everyone. Be careful, though, because tanks and enemy aircraft
will try to stop you - and they won't stop shooting while the rescuing
of hostages is going on.

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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)