Single-player games like Prototype Mansion - Used No Cover
Below are 9 single-player Steam games similar to Prototype Mansion - Used No Cover, 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 Prototype Mansion - Used No Cover page.
Ranked picks
- 1
Follia - Dear father
Single-player alternative to Prototype Mansion - Used No Cover — playable solo, no multiplayer required. Shares Indie and Adventure with Prototype Mansion - Used No Cover.
Follia – Dear Father is a stealth survival horror that captures the genre’s essence in the halls and rooms of a university campus. Marcus goes in search of his parents, but instead finds himself struggling for his life against deadly horrors that creep around every corner.
- 2
Back in 1995
Single-player alternative to Prototype Mansion - Used No Cover — playable solo, no multiplayer required. Shares Indie and Adventure with Prototype Mansion - Used No Cover.
A throwback to the survival horror and mystery games of the original Playstation, Back in 1995 faithfully re-creates everything from this forgotten era of games.
- 3
Slender: The Arrival
Single-player alternative to Prototype Mansion - Used No Cover — playable solo, no multiplayer required. Shares Indie and Adventure with Prototype Mansion - Used No Cover.
Slender Man returns more terrifying than ever. You're on your own. No one to help you. No one to hear you scream. Relive the horror all over again with cutting edge visuals for the 10th Anniversary Update and experience survival horror at its finest.
- 4
Don't Starve Together
Single-player alternative to Prototype Mansion - Used No Cover — playable solo, no multiplayer required. Shares Indie and Adventure with Prototype Mansion - Used No Cover.
Fight, Farm, Build and Explore Together in the standalone multiplayer expansion to the uncompromising wilderness survival game, Don't Starve.
- 5
Rain World
Single-player alternative to Prototype Mansion - Used No Cover — playable solo, no multiplayer required. Shares Indie and Adventure with Prototype Mansion - Used No Cover.
You are a nomadic slugcat, both predator and prey in a broken ecosystem. Grab your spear and brave the industrial wastes, hunting enough food to survive, but be wary— other, bigger creatures have the same plan... and slugcats look delicious.
- 6
Outlast
Single-player alternative to Prototype Mansion - Used No Cover — playable solo, no multiplayer required. Shares Indie and Adventure with Prototype Mansion - Used No Cover.
Hell is an experiment you can't survive in Outlast, a first-person survival horror game developed by veterans of some of the biggest game franchises in history. As investigative journalist Miles Upshur, explore Mount Massive Asylum and try to survive long enough to discover its terrible secret... if you dare.
- 7
Amnesia: The Dark Descent
Single-player alternative to Prototype Mansion - Used No Cover — playable solo, no multiplayer required. Shares Indie and Adventure with Prototype Mansion - Used No Cover.
Amnesia: The Dark Descent, a first person survival horror. A game about immersion, discovery and living through a nightmare. An experience that will chill you to the core.
- 8
Sorry We're Closed
Single-player alternative to Prototype Mansion - Used No Cover — playable solo, no multiplayer required. Shares Indie and Adventure with Prototype Mansion - Used No Cover.
Sorry We're Closed is an eccentric story-driven survival horror game about demons, angels and what happens when both sides collide. A mix of classic fixed-camera exploration and arcade-style shooting where Michelle must use her Third Eye to see between worlds, uncover secrets and solve puzzles.
- 9
Garden Variety Body Horror - Rare Import
Single-player alternative to Prototype Mansion - Used No Cover — playable solo, no multiplayer required. Shares Indie and Adventure with Prototype Mansion - Used No Cover.
90's survival-horror and sequel to 'Prototype Mansion'. Bad Japanese VO, worse English subtitles. Rare import.