Free games like Infinite Space III: Sea of Stars
Below are 8 free-to-play Steam games similar to Infinite Space III: Sea of Stars, 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 Infinite Space III: Sea of Stars page.
Ranked picks
- 1
Control, I'm Not Coming Back
Free-to-play alternative to Infinite Space III: Sea of Stars — no purchase or trial window. Shares Indie and Adventure with Infinite Space III: Sea of Stars.
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.
- 2
Endless Sky
Free-to-play alternative to Infinite Space III: Sea of Stars — no purchase or trial window. Shares Indie and Adventure with Infinite Space III: Sea of Stars.
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.
- 3
Space Pilgrim Episode I: Alpha Centauri
Free-to-play alternative to Infinite Space III: Sea of Stars — no purchase or trial window. Shares Indie and Adventure with Infinite Space III: Sea of Stars.
Captain Gail Pilgrim has been flying starships since she was a kid, ferrying passengers between planets and space stations across the galaxy. She has no reason to expect that this latest trip to Alpha Centauri will be anything special, even if her passengers are a little more diverse than usual....
- 4
VR Flush
Free-to-play alternative to Infinite Space III: Sea of Stars — no purchase or trial window. Shares Indie and Adventure with Infinite Space III: Sea of Stars.
You are sitting on a toilet when you are abducted and beamed up to an alien spaceship, where you have to convince an A.I. that you really are an intelligent lifeform.
- 5
Astrometica: Prologue
Free-to-play alternative to Infinite Space III: Sea of Stars — no purchase or trial window. Shares Indie and Adventure with Infinite Space III: Sea of Stars.
Astrometica: Prologue is the free game about surviving in space. You need to use your skills and tools to stay alive. There are many challenges to face, and you need to fight to survive. You also need to build a new base in space.
- 6
Universe For Sale - Prologue
Free-to-play alternative to Infinite Space III: Sea of Stars — no purchase or trial window. Shares Indie and Adventure with Infinite Space III: Sea of Stars.
The Prologue of Universe for Sale, a sci-fi narrative experience about human relationships and self-acceptance, follow the stories of the nameless Master, a mysterious cultist and Lila the universes vendor.
- 7
Bow to Blood: Last Captain Standing
Free-to-play alternative to Infinite Space III: Sea of Stars — no purchase or trial window. Shares Indie with Infinite Space III: Sea of Stars.
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.
- 8
Space Gladiators: The Hole
Free-to-play alternative to Infinite Space III: Sea of Stars — no purchase or trial window. Shares Indie with Infinite Space III: Sea of Stars.
Ever dreamt of being a space potato? Now’s your chance! This is the prelude for Space Gladiators, a 2D hand-drawn roguelite platformer following a bunch of captives fighting their way out of a planet prison. Defeat hordes of aliens in the gladiatorial arenas and earn your freedom!