Free games like Terracosmic
Below are 8 free-to-play Steam games similar to Terracosmic, 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 Terracosmic page.
Ranked picks
- 1

Ultimate Custom Night
Free-to-play alternative to Terracosmic — no purchase or trial window. Shares Action with Terracosmic.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 2

The Lab
Free-to-play alternative to Terracosmic — no purchase or trial window.
Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!
- 3

The Riftbreaker: Prologue
Free-to-play alternative to Terracosmic — no purchase or trial window. Shares Action and Strategy with Terracosmic.
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.
- 4

erdetspill
Free-to-play alternative to Terracosmic — no purchase or trial window. Shares Action and Adventure with Terracosmic.
Bestefar vil ha 2 is. Du må skaffe de. Det viser seg å være mer komplisert enn du trodde. Et absurd førstepersons-eventyrspill der du navigerer norsk byråkrati, snakker med rare folk og løser meningsløse oppdrag - i en liten norsk bygd.
- 5

Nazi Zombies
Free-to-play alternative to Terracosmic — no purchase or trial window. Shares Action with Terracosmic.
Nazi Zombies is a cooperative survival game where players fend off escalating waves of Nazi zombies, earning points by killing zombies and repairing barriers to buy weapons, upgrades, perks, and unlock new map areas to maximize their survival.
- 6

Unturned
Free-to-play alternative to Terracosmic — no purchase or trial window. Shares Action and Adventure with Terracosmic.
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.
- 7

Paladins®
Free-to-play alternative to Terracosmic — no purchase or trial window. Shares Action and Strategy with Terracosmic.
Paladins is the ultimate fantasy team-based shooter experience, with over 50 customizable Champions fighting in 5v5 action across a diverse Realm of modes and maps!
- 8

Muck
Free-to-play alternative to Terracosmic — no purchase or trial window. Shares Action and Adventure with Terracosmic.
Muck is a survival-roguelike. Collect resources, find items & build a base to survive for as long as you can.