Single-player games like Infestation: Origins
Below are 9 single-player Steam games similar to Infestation: Origins, 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 Infestation: Origins page.
Ranked picks
- 1

Backrooms: Extractions
Single-player alternative to Infestation: Origins — playable solo, no multiplayer required. Shares Action with Infestation: Origins.
Cooperate with up to 6 players to explore, search, and extract lost agents within the Backrooms. Solve puzzles, unlock tools, survive against entities, and progress through increasingly dangerous levels.
- 2

Bunker Invaders
Single-player alternative to Infestation: Origins — playable solo, no multiplayer required. Shares Action with Infestation: Origins.
A co-op horror game where you must scavenge for loot and maintain the bunker to keep it standing
- 3

Zort
Single-player alternative to Infestation: Origins — playable solo, no multiplayer required. Shares Action with Infestation: Origins.
Zort is an action, adventure, and horror game that can be played with up to 4 people. Explore maps with your friends and have fun while escaping from various creatures. Experience a realistic horror experience with in-game voice chat with your friends!
- 4

UNDERWARD
Single-player alternative to Infestation: Origins — playable solo, no multiplayer required. Shares Action with Infestation: Origins.
UNDERWARD is a 1-4 player co-op horror exploration game. Investigators must carry «TEST-SUBJECT» monsters from a deadly underground abandoned hospital ward.
- 5

Escape Toon Kingdom
Single-player alternative to Infestation: Origins — playable solo, no multiplayer required. Shares Action with Infestation: Origins.
Escape From Toon Kingdom is a 1–4 player co-op horror game. Play as mascots trapped in a dying theme park. Explore. Solve. Suffer. Every attraction holds a secret—and a piece of your escape.
- 6

Sketchy's Contract
Single-player alternative to Infestation: Origins — playable solo, no multiplayer required. Shares Action with Infestation: Origins.
A 1-8 player co-op sci-fi looter horror game that takes place on a mysterious asteroid belt where players must complete contracts by traveling to exotic planets to kill creatures, find loot, and/or farm planetary materials that they must return to an ominous figure named Sketchy.
- 7

Ghost Janitors
Single-player alternative to Infestation: Origins — playable solo, no multiplayer required. Shares Action with Infestation: Origins.
Ghost Janitors is a multiplayer psychological horror game for 1-4 players. Your job? Cleaning haunted houses while avoiding terrifying monsters. Ready to face the spine-tingling challenge with your team?
- 8

Spectral Scream
Single-player alternative to Infestation: Origins — playable solo, no multiplayer required. Shares Action with Infestation: Origins.
Spectral Scream is a 1-4 player cooperative horror exploration game. Are you ready to face death in the maw of purgatory? Your goal is to find key items in each chapter and retrieve the orb. But be careful! Threatening and vicious creatures await you at every stage.
- 9

Lunch Lady
Single-player alternative to Infestation: Origins — playable solo, no multiplayer required. Shares Action with Infestation: Origins.
Lunch Lady is a 1-4 player online co-op survival horror game. The school final exams are coming up and the best idea you and your friends had was to steal the test answers. Find all 10 pages and don't get caught by the murderous Lunch Lady!