Single-player games like Space Impossible
Below are 8 single-player Steam games similar to Space Impossible, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Space Impossible page.
Ranked picks
- 1
Starship EVO
Single-player alternative to Space Impossible — playable solo, no multiplayer required. Shares Action and Indie with Space Impossible.
Mine and craft your way to orbit, build your own starship and explore a vast, dangerous galaxy alongside your crew. For players who love a meaningful survival progression, a unique and elegant building system, and epic space-opera scale.
- 2
StarMade
Single-player alternative to Space Impossible — playable solo, no multiplayer required. Shares Action and Indie with Space Impossible.
The ultimate space sandbox. Participate in epic fleet battles, form alliances, strive to dominate entire galaxies and harness the universe’s resources for your industrious empire or the destruction of others. Customise your experience, the universe is yours!
- 3
Interstellar Rift
Single-player alternative to Space Impossible — playable solo, no multiplayer required. Shares Action and Indie with Space Impossible.
Interstellar Rift is an open world starship simulator with an emphasis on ship construction and multi-player interaction. Survive in a hostile galaxy with your own custom designed and constructed starship. Invite other players to join your crew or fight them across the galaxy!
- 4
Project 5: Sightseer
Single-player alternative to Space Impossible — playable solo, no multiplayer required. Shares Action and Indie with Space Impossible.
Open world multiplayer sandbox/RPG game. Explore, gather, build, research, and fight to protect what's yours -- by yourself or together with your friends.
- 5
Starbound
Single-player alternative to Space Impossible — playable solo, no multiplayer required. Shares Action and Indie with Space Impossible.
You’ve fled your home, only to find yourself lost in space with a damaged ship. Your only option is to beam down to the planet below, repair your ship and set off to explore the universe...
- 6
Evochron Legacy SE
Single-player alternative to Space Impossible — playable solo, no multiplayer required. Shares Indie with Space Impossible.
Advanced Space Flight, Combat, Trading, and Exploration Simulation. Set in a vast explorable universe, Evochron Legacy offers freeform gameplay with many diverse objectives and paths to choose from.
- 7
Necesse
Single-player alternative to Space Impossible — playable solo, no multiplayer required. Shares Action and Indie with Space Impossible.
Build, quest, and conquer across an infinite procedurally generated world. Play alone or with friends as you establish a settlement and explore deep dungeons, fight monsters and bosses, mine rare ores, craft magical equipment, recruit specialists for your colony, and more!
- 8
Avorion
Single-player alternative to Space Impossible — playable solo, no multiplayer required. Shares Action and Indie with Space Impossible.
A procedural co-op space sandbox where players can build their own space ships out of dynamically scalable blocks. Fight epic space battles, explore, mine, trade, wage wars and build your own empire to save your galaxy from being torn apart by an unknown enemy.