Tenebra
atmospheric puzzle game for Commodore 64, 2021

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Use Control Port 2.
Guide the hapless protagonist to the exit. Poor guy is afraid of darkness and
refuses to walk in the dark areas.
Move torches around, push lights on rails, find keys to doors, light up cold
braziers, pass through archways that collapse behind you, find oil barrels to
make your torches brighter, squeeze through cracks in broken walls, fix
broken rails with a hammer, illuminate the sensors to open the exits... do
whatever it takes to get out of there!
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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)