Single-player games like DeMon Researcher 2
Below are 8 single-player Steam games similar to DeMon Researcher 2, 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 DeMon Researcher 2 page.
Ranked picks
- 1

Death Below
Single-player alternative to DeMon Researcher 2 — playable solo, no multiplayer required. Shares Action and Adventure with DeMon Researcher 2.
Death Below - is a third-person action adventure with elements of survival horror. The plot of the game is based on the legend of the Soviet experiment of the 1940s.You will plunge into a dark world, and begin an exciting investigation, fighting on your way with thousands of distraught people
- 2

Cliché Horror 2000s: The Witch’s Lair
Single-player alternative to DeMon Researcher 2 — playable solo, no multiplayer required. Shares Action and Indie with DeMon Researcher 2.
Cliché Horror Anos 2000: The Witch’s Lair is a third-person horror game inspired by 2000s slasher movies. Four young filmmakers enter an abandoned mansion to shoot an amateur film, only to discover that the entity lurking within is just part of something far greater.
- 3

Dead Space (2008)
Single-player alternative to DeMon Researcher 2 — playable solo, no multiplayer required. Shares Action and Adventure with DeMon Researcher 2.
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.
- 4

Fear The Timeloop
Single-player alternative to DeMon Researcher 2 — playable solo, no multiplayer required. Shares Action and Adventure with DeMon Researcher 2.
Sheriff James Cooper is slowly bleeding to death in an unfamiliar hospital. But the moment his life ends, everything starts over. He has fifteen minutes to break this endless cycle, uncover the truth, and find a way out before it's too late.
- 5

Alan Wake's American Nightmare
Single-player alternative to DeMon Researcher 2 — playable solo, no multiplayer required. Shares Action and Adventure with DeMon Researcher 2.
A thrilling new storyline, hordes of creepy enemies, serious firepower and beautiful Arizona locations, combined with a fun and challenging new game mode!
- 6

Heaven Dust 2
Single-player alternative to DeMon Researcher 2 — playable solo, no multiplayer required. Shares Action and Indie with DeMon Researcher 2.
Deep inside a research base, waking up from a cryogenic pod, you find yourself trapped in a living hell, surrounded by zombies. Heaven Dust 2 is a love letter to classic survival horror games featuring exploration, action, puzzles, and resource management.
- 7

Dead Space™ 3
Single-player alternative to DeMon Researcher 2 — playable solo, no multiplayer required. Shares Action with DeMon Researcher 2.
Journey across space to the icy planet of Tau Volantis with Isaac Clarke and Sgt. John Carver to discover and destroy the source of the Necromorph outbreak.
- 8

Despair: Blood Curse
Single-player alternative to DeMon Researcher 2 — playable solo, no multiplayer required. Shares Action and Indie with DeMon Researcher 2.
A third-person survival horror game featuring non-linear gameplay, puzzles, and enemies from the depths of hell. When Anna's mother passes away from a sudden illness, she receives a worrying letter from her sister suggesting that not all is as it seems. Will she uncover the truth?