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

Paranormal Observation
Single-player alternative to Anomaly Observer — playable solo, no multiplayer required. Shares Indie and Simulation with Anomaly Observer.
Paranormal Observation is a single-player point-and-click ghost hunting game. Use your computer to identify the evil spirit by finding enough evidence and exorcise it with your professional tools.
- 2

Superhero Simulator
Single-player alternative to Anomaly Observer — playable solo, no multiplayer required. Shares Indie and Simulation with Anomaly Observer.
Superhero Simulator is an open-world superhero game where you fight villains and save lives! But being a hero isn’t free! You’ll need to work, pay rent, and survive. Can you handle both sides of the superhero life?
- 3

Morbid
Single-player alternative to Anomaly Observer — playable solo, no multiplayer required. Shares Early Access with Anomaly Observer.
Morbid is an atmospheric psychological horror game; experienced as Senior Detective J. Taylor, unfold haunting and morbid events that will question your sanity.
- 4

Lost Entry
Single-player alternative to Anomaly Observer — playable solo, no multiplayer required. Shares Indie with Anomaly Observer.
Lost Entry is a horror game where you search the Deep Web for information while avoiding enemies that adapt to your actions. Your goal is to survive the night and complete the task your employer gives you without getting murdered by a bunch of Deep Web killers.
- 5

Auto Dungeon
Single-player alternative to Anomaly Observer — playable solo, no multiplayer required. Shares Indie with Anomaly Observer.
Conquer the Astral Plane, Summoner! In this roguelite autobattler, build a powerful army in a vast, procedurally generated world. Collect cards, defeat foes and rival summoners, and equip, enchant, and mutate your creatures. Defeat the five champions and recover your stolen rings!
- 6

Purgatory Heroes
Single-player alternative to Anomaly Observer — playable solo, no multiplayer required. Shares Indie and Early Access with Anomaly Observer.
Purgatory Heroes is an Action-RPG where you must fight through hordes of enemies. A key feature is the ability to play as any destroyed creature whose soul you have absorbed.
- 7

Peerless Beauty Detective: Alice
Single-player alternative to Anomaly Observer — playable solo, no multiplayer required. Shares Simulation and Early Access with Anomaly Observer.
A murder occurred at the Ai Qing Apartment. The female owner of Apartment 1802 died strangely. There was no struggle, no signs of a fight. Why did she die at night? Why wasn't the male owner at home? All the mysteries await the detective: Alice to solve. There is only one truth, let's find it!
- 8

cozy cult
Single-player alternative to Anomaly Observer — playable solo, no multiplayer required. Shares Indie and Simulation with Anomaly Observer.
run a satirical cult from your phone in this cozy idle-clicker. tap to grow followers, play small minigames, unlock apps, and automate everything. ascend for upgrades and keep the numbers climbing.