Free games like Stellar Infestation
Below are 8 free-to-play Steam games similar to Stellar Infestation, 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 Stellar Infestation page.
Ranked picks
- 1
The Lab
Free-to-play alternative to Stellar Infestation — 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!
- 2
Aircar
Free-to-play alternative to Stellar Infestation — no purchase or trial window.
A simple immersive flying game built for VR. Pilot an aircar through a futuristic cityscape.
- 3
The Riftbreaker: Prologue
Free-to-play alternative to Stellar Infestation — no purchase or trial window. Shares Strategy with Stellar Infestation.
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
Dota 2
Free-to-play alternative to Stellar Infestation — no purchase or trial window. Shares Strategy with Stellar Infestation.
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.
- 5
Crusader Kings II
Free-to-play alternative to Stellar Infestation — no purchase or trial window. Shares Strategy and Simulation with Stellar Infestation.
Explore one of the defining periods in world history in an experience crafted by the masters of Grand Strategy.
- 6
PlanetSide 2
Free-to-play alternative to Stellar Infestation — no purchase or trial window.
PlanetSide 2 is an all-out planetary war, where thousands of players battle as one across enormous continents. Utilize infantry, ground and air vehicles, and teamwork to destroy your enemies in this revolutionary first-person shooter on a massive scale.
- 7
Supermarket Together
Free-to-play alternative to Stellar Infestation — no purchase or trial window. Shares Simulation with Stellar Infestation.
The multiplayer supermarket has arrived to your neighbourhood for free! Stock your shop space, unlock perks and franchises, hire employees or chase those pesky shoplifters. The more players, the more action!
- 8
Fallout Shelter
Free-to-play alternative to Stellar Infestation — no purchase or trial window. Shares Simulation with Stellar Infestation.
Fallout Shelter puts you in control of a state-of-the-art underground Vault from Vault-Tec. Build the perfect Vault, keep your Dwellers happy, and protect them from the dangers of the Wasteland.