Single-player games like The Unknown
Below are 11 single-player Steam games similar to The Unknown, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like The Unknown page.
Ranked picks
- 1
Omniscient
Single-player alternative to The Unknown — playable solo, no multiplayer required. Shares Indie and Adventure with The Unknown.
Omniscient is a first person horror set aboard a research ship drifting in Neptune's orbit. Your crew is gone. The power is out. And something else lurked onboard. Unarmed and alone, trust your newly enhanced senses to survive. They are your greatest gifts, after all.
- 2
The ordinary case of Margaret Luoni
Single-player alternative to The Unknown — playable solo, no multiplayer required. Shares Indie and Adventure with The Unknown.
The ordinary case of Margaret Luoni is a sci-fi detective game with a deep story. Help Detective Dirk understand what happened, explore a new futuristic world. There are no obvious solutions here, find your own approach to witnesses and look for hidden places and clues to discovery.
- 3
Starfall
Single-player alternative to The Unknown — playable solo, no multiplayer required. Shares Adventure with The Unknown.
A space adventure with retro gfx from the golden age of quest gaming with real type-in commands, puzzles to solve and challenging minigames.
- 4
Trajectory
Single-player alternative to The Unknown — playable solo, no multiplayer required. Shares Indie and Adventure with The Unknown.
Trajectory is a first person scifi adventure game that takes place in Earth's orbit, with a dystopian yet whimsical setting. The game has multiple endings and a variety of exotic locations in space and beyond.
- 5
A Collection of Bad Moments
Single-player alternative to The Unknown — playable solo, no multiplayer required. Shares Adventure with The Unknown.
A Collection of Bad Moments is an adventure game where the player discovers themselves in various tough situations and must use their wits to figure a way out! The moments vary from a deadly asteroid mission and mysterious virtual reality simulation to an airship duel!
- 6
Tacoma
Single-player alternative to The Unknown — playable solo, no multiplayer required. Shares Indie and Adventure with The Unknown.
Tacoma is a sci-fi narrative adventure from the creators of Gone Home. Set aboard a high-tech space station in the year 2088, explore every detail of how the station’s crew lived and worked, finding the clues that add up to a gripping story of trust, fear, and resolve in the face of disaster.
- 7
The Abandoned Planet
Single-player alternative to The Unknown — playable solo, no multiplayer required. Shares Indie and Adventure with The Unknown.
A throw-back, retro-inspired, point and click adventure with chunky and beautiful pixel art
- 8
Between Horizons – A Sci-Fi Detective Adventure
Single-player alternative to The Unknown — playable solo, no multiplayer required. Shares Indie and Adventure with The Unknown.
Between Horizons is a narrative 2.5D sci-fi detective adventure. 33 years into the Zephyr's journey, its mission is suddenly jeopardized. Can you find the culprit before it's too late? Experience an enthralling story set in a semi-open world that branches and ends based on your choices.
- 9
ParryMaster
Single-player alternative to The Unknown — playable solo, no multiplayer required. Shares Indie and Casual with The Unknown.
Defend yourself in this minimalist one-button incremental defense game. One hit, and it’s over.
- 10
The Long Drift
Single-player alternative to The Unknown — playable solo, no multiplayer required. Shares Indie and Adventure with The Unknown.
Build, upgrade, and watch your tiny universe evolve.
- 11
Tick Walk
Single-player alternative to The Unknown — playable solo, no multiplayer required. Shares Indie and Casual with The Unknown.
A turn-based puzzle game where you cross a grid of bombs, walls, and traps to reach the door. The board only moves when you move, so there's no rush — take your time and find the safe route. Easy to pick up, tough to solve.