Free games like Siege of Centauri
Below are 8 free-to-play Steam games similar to Siege of Centauri, 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 Siege of Centauri page.
Ranked picks
- 1
Ultimate Custom Night
Free-to-play alternative to Siege of Centauri — no purchase or trial window. Shares Action and Indie with Siege of Centauri.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 2
![UNBEATABLE [white label] — Steam game cover](https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/1290490/header.jpg?t=1736770503)
UNBEATABLE [white label]
Free-to-play alternative to Siege of Centauri — no purchase or trial window. Shares Action and Indie with Siege of Centauri.
A young girl learns a song. An exclusive side-story set in the world of D-CELL GAMES' upcoming rhythm-adventure.
- 3
Control, I'm Not Coming Back
Free-to-play alternative to Siege of Centauri — no purchase or trial window. Shares Indie with Siege of Centauri.
Control, I'm Not Coming Back is a short and emotional narrative game about a lost astronaut searching for a reason to keep going forward while facing the emptiness of space. Inspired by the Hopecore aesthetic, it’s a story about positivism, friendship and our human connection with Voyager 1.
- 4
Landfall Archives
Free-to-play alternative to Siege of Centauri — no purchase or trial window. Shares Action and Strategy with Siege of Centauri.
Break into the Landfall Archives to steal and play previously unreleased games, demos, interactive slide shows, and even an unreleased version of Totally Accurate Battle Simulator from 2017!
- 5
The Riftbreaker: Prologue
Free-to-play alternative to Siege of Centauri — no purchase or trial window. Shares Action and Strategy with Siege of Centauri.
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.
- 6
SCP – Containment Breach
Free-to-play alternative to Siege of Centauri — no purchase or trial window. Shares Action and Indie with Siege of Centauri.
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?
- 7
Counter-Strike 2
Free-to-play alternative to Siege of Centauri — no purchase or trial window. Shares Action with Siege of Centauri.
For over two decades, Counter-Strike has offered an elite competitive experience, one shaped by millions of players from across the globe. And now the next chapter in the CS story is about to begin. This is Counter-Strike 2.
- 8
Dota 2
Free-to-play alternative to Siege of Centauri — no purchase or trial window. Shares Action and Strategy with Siege of Centauri.
Every day, millions of players worldwide enter battle as one of over a hundred Dota heroes. And no matter if it's their 10th hour of play or 1,000th, there's always something new to discover. With regular updates that ensure a constant evolution of gameplay, features, and heroes, Dota 2 has taken on a life of its own.