Single-player games like Atrium Malum
Below are 8 single-player Steam games similar to Atrium Malum, 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 Atrium Malum page.
Ranked picks
- 1
Kohate
Single-player alternative to Atrium Malum — playable solo, no multiplayer required. Shares Action and Indie with Atrium Malum.
Arrested and sold at auction, you have been transported to a secret testing facility in deep space. Perform the required tasks while avoiding the abomination lurking within the complex.
- 2
Deadnaut
Single-player alternative to Atrium Malum — playable solo, no multiplayer required. Shares Indie with Atrium Malum.
Deadnaut is Screwfly Studios' second game and follow up to cult hit, Zafehouse: Diaries. Deadnauts, so named because they’re unlikely to return, must explore, investigate and fight their way through the derelict ships of dead civilisations. Every mission is unique and no two locations are the same.
- 3
Void Bastards
Single-player alternative to Atrium Malum — playable solo, no multiplayer required. Shares Action with Atrium Malum.
Inspired by BioShock and System Shock 2, Void Bastards is a revolutionary new strategy-shooter that will test your wits as well as exercise your aim. Can you lead the misfit prisoners of the Void Ark through the derelict spaceships and myriad dangers of the Sargasso Nebula?
- 4
Prey
Single-player alternative to Atrium Malum — playable solo, no multiplayer required. Shares Action with Atrium Malum.
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.
- 5
System Shock® 2 (1999)
Single-player alternative to Atrium Malum — playable solo, no multiplayer required. Shares Action with Atrium Malum.
"Remember, it is my will that guided you here. It is my will that gave you your cybernetic implants, the only beauty in that meat you call a body. If you value that meat... you will do as I tell you." The cult classic sci-fi horror FPS-RPG has returned.
- 6
Beacon
Single-player alternative to Atrium Malum — playable solo, no multiplayer required. Shares Action and Indie with Atrium Malum.
Mutate yourself to victory as you scavenge an uncharted alien planet in this stylish sci-fi action rogue-like. With the help of your Clone Bay death isn't the ending, just another chance to find your Beacon.
- 7
GRAIN ROT
Single-player alternative to Atrium Malum — playable solo, no multiplayer required. Shares Action and Indie with Atrium Malum.
A horror co-op extraction builder set in a scorched wasteland where everything burns. Descend with your friends into shifting ruins, rip out furniture, and scavenge for loot before the Corrupted close in. Make it back alive, then rebuild the Outpost to better your chances for the next run.
- 8
Picayune Dreams
Single-player alternative to Atrium Malum — playable solo, no multiplayer required. Shares Action with Atrium Malum.
Picayune Dreams is a roguelike blend of bullet heaven horde survival, and bullet hell gameplay. Adrift across the endless void, you must fend off thousands of nightmarish and otherwordly creatures. Uncover a mysterious and surreal story. And don't forget. You mu [TRANSMISSION INTERRUPTED...]