Single-player games like Planeta 55
Below are 16 single-player Steam games similar to Planeta 55, 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 Planeta 55 page.
Ranked picks
- 1
Undead Space
Single-player alternative to Planeta 55 — playable solo, no multiplayer required. Shares Action and Indie with Planeta 55.
SPACE - FEAR, AND NO ONE WILL HELP YOU ............. A mix of horror and complete hopelessness. Explore dark corridors, isolated research modules, and abandoned Martian complexes. Here, you are completely alone, surrounded by the undead. Survive by immersing yourself in cosmic SURVIVAL HORROR.
- 2
CARNAGE OFFERING
Single-player alternative to Planeta 55 — playable solo, no multiplayer required. Shares Action with Planeta 55.
Ultra fast-paced sci-fi FPS where you battle waves of robots and genetically engineered creatures. Upgrade your arsenal, unleash explosive physics, and survive relentless combat.
- 3
Prey
Single-player alternative to Planeta 55 — playable solo, no multiplayer required. Shares Action with Planeta 55.
In Prey, you awaken aboard Talos I, a space station orbiting the moon in the year 2032. You are the key subject of an experiment meant to alter humanity forever – but things have gone terribly wrong. The space station has been overrun by hostile aliens and you are now being hunted.
- 4
Dead Space™ 2
Single-player alternative to Planeta 55 — playable solo, no multiplayer required. Shares Action with Planeta 55.
Three years after the Necromorph infestation aboard the USS Ishimura, Isaac Clarke awakens from a coma, confused, disoriented, and on a space station called The Sprawl. Explore this world and its zero-g environments to discover the truth about the Unitology and its role in the Necromorph epidemic.
- 5
Dead Space (2008)
Single-player alternative to Planeta 55 — playable solo, no multiplayer required. Shares Action with Planeta 55.
You are Isaac Clarke, an engineer on the spacecraft USG Ishimura. You're not a warrior. You're not a soldier. You are, however, the last line of defense for the remaining living crew.
- 6
Unsafe Express
Single-player alternative to Planeta 55 — playable solo, no multiplayer required. Shares Action and Indie with Planeta 55.
Unsafe Express is a cooperative first-person survival horror game for 1-4 players. Navigate through space stations, collect materials and outlast your enemies! Choose your objective based on complexity levels, then cast your vote. Gather items, exterminate hostiles, fulfill missions and repeat!
- 7
High On Life 2
Single-player alternative to Planeta 55 — playable solo, no multiplayer required. Shares Action with Planeta 55.
An intergalactic conspiracy threatens the fate of humanity! Team up with a wide cast of talking alien guns as you shoot, stab, and skate your way through the exotic locales to take down the bad guys and save your favorite species (humans)!
- 8
Sanctum 2
Single-player alternative to Planeta 55 — playable solo, no multiplayer required. Shares Action and Indie with Planeta 55.
Sanctum 2 is the sequel to the world’s first Tower Defense/FPS hybrid game. Pick from four unique character classes and embark on a mission to protect the oxygen-producing Cores from hordes of deadly aliens who are threatened by their existence.
- 9
Dread X Collection 2
Single-player alternative to Planeta 55 — playable solo, no multiplayer required. Shares Action and Indie with Planeta 55.
Explore 12 horror games made in 10 days connected by a meta narrative experience you didn't expect. Step into a world of darkness and discover the secrets you didn't know were right beneath the surface. Find the tapes and unlock the mystery inside the Dread X Collection 2.
- 10
Dread X Collection 4: The Hunt
Single-player alternative to Planeta 55 — playable solo, no multiplayer required. Shares Action with Planeta 55.
A horror anthology shooter in the Dread X Collection series. Co-produced by DUSK creator David Szymanski. Featuring 7 new short games, a robust launcher world set in an abandoned arctic base.
- 11
Timore Inferno
Single-player alternative to Planeta 55 — playable solo, no multiplayer required. Shares Action and Indie with Planeta 55.
Timore Inferno is the 4th indie horror game in the Timore series. Strange visitors have come to a little girl's house, robbing her home and killing everyone inside... Except her. With dolls holding the anger of her loss, everyone who tries to go there and investigate what happened wind up missing.
- 12
GentleMoon 2
Single-player alternative to Planeta 55 — playable solo, no multiplayer required. Shares Action and Indie with Planeta 55.
GentleMoon 2 is a second game in GentleMoon series, an action game, filled with jokes and unlogical funny things to make you smile. The objective is to fly to the Moon and get away from the zombies this way. Before your trip to the Moon you collect the things that helps you to survive, like food, a weapon, good music, tv...
- 13
Timore 5
Single-player alternative to Planeta 55 — playable solo, no multiplayer required. Shares Indie with Planeta 55.
Timore 5 is an indie horror game, 5th one in Timore series. A scientist named Frank has done a lot inventing new things, but his experiments aren't without the consequences. In this game Frank will try to record his dreams and convert them to computer data, allowing him to review his dreams later, but the experiment might not go as...
- 14
Guardian Of December
Single-player alternative to Planeta 55 — playable solo, no multiplayer required. Shares Indie with Planeta 55.
Go through ice cave, dungeon, temple, darkness collection, castle, swamp, fight the witch, vampires, monsters, undead creatures, magic animals and many more, get stronger, unlock new skills, get new weapons, customize your Guardian with helmets and wings you get from battles, get to know about different creatures, their stories...
- 15
A Dream For Aaron
Single-player alternative to Planeta 55 — playable solo, no multiplayer required. Shares Action and Indie with Planeta 55.
A Dream For Aaron is a first person shooter with a huge replay value.
- 16
Necro Immortallis
Single-player alternative to Planeta 55 — playable solo, no multiplayer required. Shares Indie with Planeta 55.
Indie horror game about a cruel escape from the artificial death lurking in the forest during World War 2.