Free games like Astronaut Simulator
Below are 8 free-to-play Steam games similar to Astronaut Simulator, 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 Astronaut Simulator page.
Ranked picks
- 1
Endless Sky
Free-to-play alternative to Astronaut Simulator — no purchase or trial window. Shares Indie and Adventure with Astronaut Simulator.
Endless Sky is a 2D space trading and combat game inspired by the classic Escape Velocity series. Work your way up from a relatively wimpy shuttle, cargo ship, or fighter, to a highly upgraded and customized flagship or to a massive fleet of warships or freighters.
- 2
Bow to Blood: Last Captain Standing
Free-to-play alternative to Astronaut Simulator — no purchase or trial window. Shares Indie with Astronaut Simulator.
Become a Captain! Fly your ship and command your crew as you compete to become Champion in a winner-takes-all reality show. Build relationships and plot betrayals to avoid getting voted off the season and become the last captain standing. Optional VR support.
- 3
Occupy Mars: Prologue (2020)
Free-to-play alternative to Astronaut Simulator — no purchase or trial window. Shares Indie and Adventure with Astronaut Simulator.
Occupy Mars: Prologue is an old introduction to the world of Occupy Mars in which you have to use your brain in order to survive. The Prologue tells a separate story in a closed location and shows a sneak-peek of the full game mechanics.
- 4
Interkosmos
Free-to-play alternative to Astronaut Simulator — no purchase or trial window. Shares Indie and Adventure with Astronaut Simulator.
Interkosmos is an arcady astronaut adventure in VR. Brace yourself for a rush of hectic gameplay to challenge your inner cosmonaut, and a fun story full of twists and Cold War absurdities.
- 5
Zero Gravity
Free-to-play alternative to Astronaut Simulator — no purchase or trial window. Shares Indie and Adventure with Astronaut Simulator.
Zero Gravity is a beautiful first-person/third-person puzzle-platformer simulation game where you will undergo four types of game modes. (Zero Gravity is being recreated, find more info in the 'Early Access Description')
- 6
GASP
Free-to-play alternative to Astronaut Simulator — no purchase or trial window. Shares Indie and Simulation with Astronaut Simulator.
This game takes place in the same universe as our upcoming tittle Secluded; you take control of a lone astronaut that lands on the surface of a planet, miles away from the other members. And it’s your job to meet up with the other astronauts.
- 7
Hope of Humanity
Free-to-play alternative to Astronaut Simulator — no purchase or trial window. Shares Indie and Adventure with Astronaut Simulator.
Engage in the construction of your station from a variety of different modules. Create your space fleet. Protect your base from enemies...
- 8
The Pirates of Sector 7
Free-to-play alternative to Astronaut Simulator — no purchase or trial window. Shares Indie and Adventure with Astronaut Simulator.
Seek adventure, fortune and fame in a sector of space riddled with faction conflict, dastardly pirates, & deft merchants.