Single-player games like Question Mark
Below are 10 single-player Steam games similar to Question Mark, 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 Question Mark page.
Ranked picks
- 1
4番線 | Platform 4
Single-player alternative to Question Mark — playable solo, no multiplayer required. Shares Action and Strategy with Question Mark.
The sequel to the acclaimed anomaly-finding games "Nibansen" and "Sanbansen" has finally arrived! Find the pattern and escape if an anomaly occurs in the mysterious homage-inspired escape game "Platform 4," where you journey from a repeating station to the airport.
- 2
No Visitors Allowed
Single-player alternative to Question Mark — playable solo, no multiplayer required. Shares Indie and Adventure with Question Mark.
A psychological horror game inspired by The Exit 8, where players must escape a looping abandoned hospital corridor by detecting anomalies.
- 3
Simulation 9
Single-player alternative to Question Mark — playable solo, no multiplayer required. Shares Adventure and Simulation with Question Mark.
You wake up in an endless hallway with no memory of anything. A voice calls out to you and explains that after your death, your mind was placed into a computer simulation. Unfortunately, bugs are starting to appear, and you’ll have to report them to fix the simulation.
- 4
The Liminal Dimension
Single-player alternative to Question Mark — playable solo, no multiplayer required. Shares Action and Indie with Question Mark.
You're trapped in an endless loop within a liminal dimension, where each loop leads to increasingly unsettling places. Will you find the way out of this psychological horror? The game offers a unique déjà vu experience that blurs the lines between reality and illusion.
- 5
Floor 12: The Delivery
Single-player alternative to Question Mark — playable solo, no multiplayer required. Shares Indie and Adventure with Question Mark.
You need to deliver the order to the 12th floor. But there's a problem in the apartment building. You find yourself trapped in a loop between floors. The way to break the loop is to detect the anomalies.
- 6
Six Shake Coin
Single-player alternative to Question Mark — playable solo, no multiplayer required. Shares Strategy and Indie with Question Mark.
This is a game that combines divination with cultivation to decipher and reason. You can learn about the knowledge of the Six Shake Coin while playing. Come and learn about the charm of traditional Chinese culture~
- 7
Hotel Infinity
Single-player alternative to Question Mark — playable solo, no multiplayer required. Shares Indie and Adventure with Question Mark.
In Hotel Infinity, you find yourself caught in a loop. To break free, you must detect anomalies. Once you locate an anomaly, you have to decide which direction to take; making the wrong choice sends you right back to the beginning.
- 8
Computer Physics Simulator 2023
Single-player alternative to Question Mark — playable solo, no multiplayer required. Shares Action and Indie with Question Mark.
Computer Physics Simulator 2023 - sequel of CPS 2020, innovation simulator about construct PC with physics of parts. There you can using operating system, using security camera(for watch street), listen music, watching videos and photos, play in games of different eras of game industry.
- 9
Simulacro
Single-player alternative to Question Mark — playable solo, no multiplayer required. Shares Action and Strategy with Question Mark.
Simulacro is a 3D action-platformer with a measured pace and unconventional mechanics. In a world of strange physics and synthetic creatures, the experience challenges genre standards with a unique approach.
- 10
FUNDAMENTA
Single-player alternative to Question Mark — playable solo, no multiplayer required. Shares Action and Indie with Question Mark.
FUNDAMENTA is a versatile building software where you build and play. Create on a grid, toggle between game and free-flight modes, and use Photo Mode to export images with or without a transparent background. Perfect for creators looking to export their builds as 3D models (.obj) or artwork.