Free games like Catastronauts
Below are 8 free-to-play Steam games similar to Catastronauts, 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 Catastronauts page.
Ranked picks
- 1
The Expendabros
Free-to-play alternative to Catastronauts — no purchase or trial window. Shares Action and Indie with Catastronauts.
The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.
- 2
Iron Snout
Free-to-play alternative to Catastronauts — no purchase or trial window. Shares Action and Indie with Catastronauts.
Iron Snout is a fast, colorful and brutal fighting game in which you will be helping a piglet fight for its life against hordes of wolves.
- 3
DYO
Free-to-play alternative to Catastronauts — no purchase or trial window. Shares Indie with Catastronauts.
DYO is a mind-bending cooperative platformer for one or two players where you can hop between two halves of a split screen.
- 4
Unturned
Free-to-play alternative to Catastronauts — no purchase or trial window. Shares Action and Indie with Catastronauts.
You're a survivor in the zombie infested ruins of society, and must work with your friends and forge alliances to remain among the living.
- 5
Stumble Guys
Free-to-play alternative to Catastronauts — no purchase or trial window. Shares Action and Indie with Catastronauts.
Ready for the chaos? Stumble Guys is a 32-player, fast-paced multiplayer party royale where players dash, jump, and fall across hilarious obstacle courses in a fun race to be the last one standing.
- 6
Bloons TD Battles
Free-to-play alternative to Catastronauts — no purchase or trial window. Shares Action with Catastronauts.
Go head to head with other players in a Bloon-popping battle for victory. From the creators of best-selling Bloons TD 5, this all new Battles game is specially designed for multiplayer combat, featuring the ability to control bloons directly and send them charging past your opponent's defenses.
- 7
Super Animal Royale
Free-to-play alternative to Catastronauts — no purchase or trial window. Shares Action and Indie with Catastronauts.
Welcome to the coziest way to kill your friends. Super Animal Royale is a 64-player, top-down 2D battle royale where adorably murderous animals fight tooth, claw, and machine gun. Then, relax in Super Animal World with fishing, hamsterball races, and story quests before the next fight to the death.
- 8
Spiral Knights
Free-to-play alternative to Catastronauts — no purchase or trial window. Shares Action and Indie with Catastronauts.
Join the ranks of the Spiral Knights. Stranded on an alien world, you must explore the ever-changing Clockworks beneath its surface.