Single-player games like Corridor 15 Firts
Below are 10 single-player Steam games similar to Corridor 15 Firts, 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 Corridor 15 Firts page.
Ranked picks
- 1
Backrooms: Overstay
Single-player alternative to Corridor 15 Firts — playable solo, no multiplayer required. Shares Action and Indie with Corridor 15 Firts.
Survival horror in an infinite, procedurally generated Backrooms. Solo or in 1–8 player co-op: scavenge, craft, build a shelter, and hide from monsters that hunt by light and sound. Stay fed, warm, and sane long enough to find the way out.
- 2
BACKROOMS PINTEROI
Single-player alternative to Corridor 15 Firts — playable solo, no multiplayer required. Shares Action and Indie with Corridor 15 Firts.
BACKROOMS PINTEROI: Explore the endless Backrooms on your own or with your friends. Survive ‘terrifying’ entities, solve puzzles, manage your resources and find your way out. Each level features new puzzles, entities and things to discover. Two new levels are added every month :)
- 3
Backrooms: The Game
Single-player alternative to Corridor 15 Firts — playable solo, no multiplayer required. Shares Action and Indie with Corridor 15 Firts.
Backrooms is a creepypasta that contains randomly generated office rooms that seem endless. The walls are mono yellow in color. It is also an eternal paradox.
- 4
Who is There?
Single-player alternative to Corridor 15 Firts — playable solo, no multiplayer required. Shares Action and Indie with Corridor 15 Firts.
Who Is There is a single-player action-horror game. You have to find a safe place to hide from the shadows.
- 5
Paranormal
Single-player alternative to Corridor 15 Firts — playable solo, no multiplayer required. Shares Action and Indie with Corridor 15 Firts.
Experience the horrors of a haunting that's never the same twice. Paranormal is a 3D fully dynamic haunting experience. The player takes the role of Mattel Clarke, an artist who has a haunted house. Mattel decides to film the hauntings with his camera, which is the viewpoint of the game.
- 6
Invasion 2037
Single-player alternative to Corridor 15 Firts — playable solo, no multiplayer required. Shares Action and Indie with Corridor 15 Firts.
Become a survival scientist in a savage post-apocalyptic world where aliens have the control of the world and find a cure, manage your shelter and fight to survive
- 7
Girl Amazon Survival
Single-player alternative to Corridor 15 Firts — playable solo, no multiplayer required. Shares Action and Indie with Corridor 15 Firts.
Stay alive fighting with the bandits and zombies. Hunt animals, build houses.
- 8
War of the Worlds
Single-player alternative to Corridor 15 Firts — playable solo, no multiplayer required. Shares Action and Indie with Corridor 15 Firts.
Hardcore horror open world survival game which throws the player into the middle of the extermination of mankind with the sole purpose of surviving long enough to find a way to bring down the alien machines. Loot buildings, fight off hostile survivors, stay hidden from the machines, and stay alive.
- 9
C15
Single-player alternative to Corridor 15 Firts — playable solo, no multiplayer required. Shares Action and Indie with Corridor 15 Firts.
This is a simple horror game, with an additional cooperative mode and an easy story about a scientist and his experiment on the brain.
- 10
Targeosity Horror
Single-player alternative to Corridor 15 Firts — playable solo, no multiplayer required. Shares Action and Indie with Corridor 15 Firts.
Maniac brothers escaped from a secret laboratory taking equipment and samples of bio-weapons with them, which put the entire city in danger. Scary story from two different characters who accidentally became victims of the brothers. You will have to solve their puzzles and play mini-games to survive.