Single-player games like Galactic Sanctuaries
Below are 9 single-player Steam games similar to Galactic Sanctuaries, 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 Galactic Sanctuaries page.
Ranked picks
- 1
Mission: Aliens
Single-player alternative to Galactic Sanctuaries — playable solo, no multiplayer required. Shares Action with Galactic Sanctuaries.
Sergeant, last night we received a signal that an unknown aircraft of extraterrestrial origin had crashed in the taiga. The locals assured us that at the crash site they observed five creatures very similar to humans, only with gray skin and large almond-shaped eyes.
- 2
PENGUIN HOTEL -Chapter 1-
Single-player alternative to Galactic Sanctuaries — playable solo, no multiplayer required. Shares Action and Indie with Galactic Sanctuaries.
You have been invited to the popular “Penguin Hotel”. There, you get caught up in a terrifying event. Solve puzzles and battle with a special camera! Experience a very strange penguin horror.
- 3
NUC: After The Blast
Single-player alternative to Galactic Sanctuaries — playable solo, no multiplayer required. Shares Action and Indie with Galactic Sanctuaries.
Try to survive and find your family after a massive Nuclear Power Plant explosion.
- 4
Unknown Signal: Invasion
Single-player alternative to Galactic Sanctuaries — playable solo, no multiplayer required. Shares Action and Indie with Galactic Sanctuaries.
Unknown Signal: Invasion is a continuation of the exciting sci-fi game. This time you have to go to an unknown planet to investigate a new mysterious signal coming from an unknown source.
- 5
Scindistella
Single-player alternative to Galactic Sanctuaries — playable solo, no multiplayer required. Shares Action and Indie with Galactic Sanctuaries.
Scindistella is a fast-paced space arcade game about a large-scale war between two powers. Take part in fighter battles, destroy cruisers and stations, fight in planetary orbits, and invade enemy systems.
- 6
Epoch Makers
Single-player alternative to Galactic Sanctuaries — playable solo, no multiplayer required. Shares Action and Indie with Galactic Sanctuaries.
Step into the past and rebuild history in Epoch Makers, a co-op restoration sim for 1–4 players. Clean, repair, and reconstruct iconic landmarks while tackling tricky obstacle courses that test your coordination, timing, and teamwork.
- 7
Blackstar Ranger
Single-player alternative to Galactic Sanctuaries — playable solo, no multiplayer required. Shares Action and Indie with Galactic Sanctuaries.
Blackstar Ranger is a high-octane and immersive first-person space shooter. From the seat of your advanced fighter, you will complete contracts for BLACKSTAR, the most esteemed Private Military Faction in the solar system. With 6DOF capability, you will battle threats throughout the system.
- 8
Chronicles of Deeps
Single-player alternative to Galactic Sanctuaries — playable solo, no multiplayer required. Shares Action with Galactic Sanctuaries.
Chronicles of Deeps is Sci-fi FPS where you need to control submarines to get through story. In 2070, an event happened which left the whole world under the ocean. People separated on fractions and started to fight for resources. In 2112, some things happened which you should discover in this game.
- 9
Into The Depths
Single-player alternative to Galactic Sanctuaries — playable solo, no multiplayer required. Shares Action and Indie with Galactic Sanctuaries.
Escape the lab and survive through dangerous monsters and military personnel