Force Seven

gauntlet style shoot'em up game for Commodore 64, 1987

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In Force Seven, the player is in charge of a specially trained squadron which
consists of seven crew members, all with different expertise. Their task is
to infiltrate the energy production plant on the planet KARIS by rescuing any
survivors and destroying any aliens that are holding them captive.

The player is equipped with a flame thrower which they can use to destroy the
aliens, but caution must be taken so that they do not destroy survivors by
accident. If the player spends too much time in a room, a green alien appears
in their exact location. It is invincible to shots, so the player needs to
get away as soon as possible. If the player comes into contact with any
aliens, their energy is depleted. When the player has no energy left, the
crew member they are controlling dies, requiring them to select another
member.

Also in each room are supplies, and the player can stock up on more ammo,
grenades, or health if required. Teleports around the facility warp the
player to a room with a blueprint reader. Using this lets players either
travel between the plant's six floors or to another area within the same
floor.

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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)
         [F11] - toggle fullscreen mode
  [ScrollLock] - quick switch control ports
    [PageDown] - make a screenshot (320x200)