Free games like Mutation
Below are 8 free-to-play Steam games similar to Mutation, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Mutation page.
Ranked picks
- 1
Ultimate Custom Night
Free-to-play alternative to Mutation — no purchase or trial window. Shares Action and Indie with Mutation.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 2
Indigo Park: Chapter 1
Free-to-play alternative to Mutation — no purchase or trial window. Shares Action and Indie with Mutation.
Explore the abandoned childhood wonder of Indigo Park! Guided by Rambley the Raccoon, help restore power to the destroyed amusement park while you run from the reason it shut down.
- 3
Counter-Strike:Global Offensive
Free-to-play alternative to Mutation — no purchase or trial window. Shares Action with Mutation.
Counter-Strike:Global Offensive (CS:GO) expands upon the team-based action gameplay that it pioneered when it was launched over 2 decades ago. CS:GO features new maps, characters, weapons, and game modes, and delivers updated versions of the classic CS content (de_dust2, etc.).
- 4
The Children of Clay
Free-to-play alternative to Mutation — no purchase or trial window. Shares Indie and Adventure with Mutation.
The Children of Clay is a short stop motion archeology horror game, where you have to study an ancient artefact and discover its dark secret.
- 5
Hello Neighbor Alpha 2
Free-to-play alternative to Mutation — no purchase or trial window. Shares Indie and Adventure with Mutation.
Welcome to Alpha 2 of Hello Neighbor. Play against an advanced, self-learning AI in what eventually became Act 1 of Hello Neighbor - the stealth horror home invasion sim.
- 6
The Riftbreaker: Prologue
Free-to-play alternative to Mutation — no purchase or trial window. Shares Action and Indie with Mutation.
The Riftbreaker: Prologue allows you to experience the events taking place before the story campaign of the main game. Explore an entirely new world. Gather resources. Build up a base. Defend yourself from thousands of alien creatures.
- 7
Hog Hunter 2021
Free-to-play alternative to Mutation — no purchase or trial window. Shares Action and Indie with Mutation.
Hog hunter is a short atmospheric game about catching hogs out in the wild, be careful though not everything in the woods is safe...
- 8
SCP – Containment Breach
Free-to-play alternative to Mutation — no purchase or trial window. Shares Action and Indie with Mutation.
A procedural first-person horror adventure. You are on your own after something goes terribly wrong in this top-secret containment facility. Collect items to aid in your escape and try to uncover the truth, as horror lurks behind every door. Can you make it out alive?