Single-player games like Simulation 9
Below are 8 single-player Steam games similar to Simulation 9, 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 Simulation 9 page.
Ranked picks
- 1

BACKROOMS ANOMALY
Single-player alternative to Simulation 9 — playable solo, no multiplayer required. Shares Adventure and Simulation with Simulation 9.
Explore a looping corridor filled with anomalies. Walk through the fluorescent-lit backrooms environment, examine your surroundings, and spot subtle changes in reality.
- 2

Targeted –10 Days
Single-player alternative to Simulation 9 — playable solo, no multiplayer required. Shares Simulation and Casual with Simulation 9.
Can you survive 10 Days in this anomaly-finding game? Stay vigilant, because YOU ARE THE TARGET!
- 3

Unclogged
Single-player alternative to Simulation 9 — playable solo, no multiplayer required. Shares Adventure and Simulation with Simulation 9.
Unclogged is a puzzle horror escape game. Collect items, solve puzzles, unclog the toilet, and hopefully make an escape.
- 4

Finnish Cottage 8
Single-player alternative to Simulation 9 — playable solo, no multiplayer required. Shares Adventure and Simulation with Simulation 9.
You've been trapped in a looping Finnish summer cottage. Use your observation and memory to find anomalies and make the right choice to escape the Finnish Cottage 8.
- 5

What The Dog Remembers
Single-player alternative to Simulation 9 — playable solo, no multiplayer required. Shares Simulation with Simulation 9.
A retro style psychological horror game. Survive a week in a claustrophobic trailer, spot reality breaking anomalies, and document your findings. Every night tests your perception. Every mistake costs you. Your dog knows.
- 6

Is it different or not?
Single-player alternative to Simulation 9 — playable solo, no multiplayer required. Shares Adventure and Simulation with Simulation 9.
Your task is to scrutinize every corner of a schoolroom for differences. If the room is perfect, you can safely move forward. However, if you notice even the slightest difference, you must step back. Your primary weapon in this game is a keen eye and quick reaction time.
- 7

The Room Stalker
Single-player alternative to Simulation 9 — playable solo, no multiplayer required. Shares Adventure and Simulation with Simulation 9.
You are trapped in a hotel room. Find the anomaly and break free from the loop.
- 8

DEVIL'S WAY
Single-player alternative to Simulation 9 — playable solo, no multiplayer required. Shares Simulation with Simulation 9.
A horror game that tests your wits, courage and dark sense of humor. Solve puzzles to survive in a world full of dark secrets, but beware - there could be something waiting around every corner!