Single-player games like AlterSpace
Below are 8 single-player Steam games similar to AlterSpace, 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 AlterSpace page.
Ranked picks
- 1
Project Mind
Single-player alternative to AlterSpace — playable solo, no multiplayer required. Shares Adventure and Early Access with AlterSpace.
RAID hostile spaceships, BUILD powerful ships, and RECRUIT skilled crew members to expand your fleet! Jump into this action-packed shooter and fight to keep Project Mind from falling into the wrong hands...
- 2
HAEX
Single-player alternative to AlterSpace — playable solo, no multiplayer required. Shares Adventure and Early Access with AlterSpace.
An anomaly has been detected in the sub-arctic north. The science team sent to investigate has gone missing. Survive an alien-scarred wilderness solo or with up to 3 friends. Push back the mist, reshape the world, craft weapons and gear, and fight to unearth what happened.
- 3
Stellar Overload
Single-player alternative to AlterSpace — playable solo, no multiplayer required. Shares Adventure and RPG with AlterSpace.
Robots invaded the peaceful planet Merx. Go on an adventure to free your world from them. Stellar Overload is a 3D open-world, blocks-based, FPS, adventure game.
- 4
Fargone
Single-player alternative to AlterSpace — playable solo, no multiplayer required. Shares RPG and Early Access with AlterSpace.
Fargone is an RPG-based survival game with a strong focus on creating a living, breathing world through dynamic events, and NPC interactions. Set in a fictional land known only as The Barrens, you must survive by any means, whether that be alone or by allying yourself with a faction.
- 5
Underspace
Single-player alternative to AlterSpace — playable solo, no multiplayer required. Shares Adventure and RPG with AlterSpace.
The spiritual successor to Freelancer with a Lovecraftian, sandbox RPG twist. Explore a vast handmade universe with Day 1 mod support and a planned PvP/co-op multiplayer on the Early Access roadmap. You're going to need a bigger ship.
- 6
Star Shelter
Single-player alternative to AlterSpace — playable solo, no multiplayer required. Shares Adventure with AlterSpace.
Star shelter is a space survival game built from the ground up for VR. You are stranded in space, you must climb around in Zero-G, explore, scavenge, craft, hack and fight to survive. You have to build, arm and upgrade your own space station in order to escape the cosmic graveyard.
- 7
Starpoint Gemini 2
Single-player alternative to AlterSpace — playable solo, no multiplayer required. Shares RPG with AlterSpace.
Captain your own space ship and roam the galaxy in 3D in this tactical space simulator with tons of RPG depth ! Space has never looked so inviting - but images can betray...It has been two years since the end of the second Gemini war, the situation in the wartorn system is further from resolution than ever.
- 8
EVERSPACE™ 2
Single-player alternative to AlterSpace — playable solo, no multiplayer required. Shares Adventure and RPG with AlterSpace.
EVERSPACE 2 is a fast-paced single-player spaceship shooter with exploration in space and on planets, tons of loot, RPG elements, mining, and crafting. Experience an exciting sci-fi story set in a vivid, handcrafted open world full of secrets, puzzles, and perils.