One Night
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About One Night
One Night is a survival horror game set in an alternate 2012. You must escape The Complex, a top-secret research facility where everyone you knew is dead and forces beyond explanation have taken hold. Relentless monsters and puzzles stand in your way.
The Complex
As you explore the facility, you face survival horror challenges in the style of 1990s games. The story combines science fiction with H.P. Lovecraft’s work, and your actions determine whether NPCs live or die. The game has multiple endings.
One Night: Ultimate Edition
The Ultimate Edition uses a new engine, overhauled gameplay mechanics and a completely rewritten storyline.
Frequently asked questions
Yes. One Night is free to play on Steam, so there is nothing to buy to start playing.
The minimum requirements for One Night are: Windows XP, Intel Pentium 4, 512 MB RAM, 200 MB storage. It runs on Windows only. The recommended specs are in the System requirements section.
No. One Night is a single-player game.
Mostly, yes. Valve rates One Night as Playable on the Steam Deck: it runs, but may need some manual setup.
Yes. One Night is the full base game. You need nothing else to play it.













