Single-player games like Dementium II
Below are 12 single-player Steam games similar to Dementium II, 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 Dementium II page.
Ranked picks
- 1
Left 4 Dead 2
Single-player alternative to Dementium II — playable solo, no multiplayer required. Shares Action with Dementium II.
Set in the zombie apocalypse, Left 4 Dead 2 is a co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns.
- 2
Resident Evil Village
Single-player alternative to Dementium II — playable solo, no multiplayer required. Shares Action with Dementium II.
Experience survival horror like never before in the 8th major installment in the Resident Evil franchise - Resident Evil Village. With detailed graphics, intense first-person action and masterful storytelling, the terror has never felt more realistic.
- 3
Back 4 Blood
Single-player alternative to Dementium II — playable solo, no multiplayer required. Shares Action with Dementium II.
Back 4 Blood is a thrilling cooperative first-person shooter from the creators of the critically acclaimed Left 4 Dead franchise. Experience the intense 4 player co-op narrative campaign, competitive multiplayer as human or Ridden, and frenetic gameplay that keeps you in the action.
- 4
The Evil Within 2
Single-player alternative to Dementium II — playable solo, no multiplayer required. Shares Action and Adventure with Dementium II.
Detective Sebastian Castellanos has lost everything, including his daughter, Lily. To save her, he must descend into the nightmarish world of STEM. Horrifying threats emerge from every corner, and he must rely on his wits to survive. For his one chance at redemption, the only way out is in.
- 5
Ion Fury
Single-player alternative to Dementium II — playable solo, no multiplayer required. Shares Action and Indie with Dementium II.
3D Realms, creators of Duke Nukem 3D, Prey, and Max Payne, team up with Voidpoint to bring back the legendary Build Engine, famous for classic shooters like Duke Nukem 3D, Shadow Warrior, and Blood. Fast-paced FPS combat across huge, secret-packed levels. Ion Fury is the real deal!
- 6
Trepang2
Single-player alternative to Dementium II — playable solo, no multiplayer required. Shares Action and Indie with Dementium II.
Become the ultimate badass in Trepang2: A gory, action-packed FPS set in the near future. Unleash all hell on your enemies, dodge bullets and leave a trail of destruction in this hardcore and frenetic shooter.
- 7
Warhammer 40,000: Boltgun
Single-player alternative to Dementium II — playable solo, no multiplayer required. Shares Action and Indie with Dementium II.
Load up your Boltgun and unleash the awesome Space Marine arsenal to blast your way through an explosion of sprites, pixels and blood in a perfect blend of Warhammer 40,000, frenetic gameplay and the stylish visuals of 90’s retro shooters.
- 8
Prodeus
Single-player alternative to Dementium II — playable solo, no multiplayer required. Shares Action and Indie with Dementium II.
Prodeus is a first-person shooter of old, re-imagined using modern rendering techniques and technology. Experience the quality you’d expect from a modern AAA game, designed with retro aesthetics and gameplay that invoke the tech-imposed limits of older hardware.
- 9
Xeodrifter
Single-player alternative to Dementium II — playable solo, no multiplayer required. Shares Action and Indie with Dementium II.
Xeodrifter is the story of an interstellar drifter traveling the stars on a simple mission of exploration. We join our nomad as he embarks on the investigation of a small cluster of four planets in the omega sector, after a collision with a rogue asteroid damaged his warp core.
- 10
Mutant Mudds Deluxe
Single-player alternative to Dementium II — playable solo, no multiplayer required. Shares Action and Indie with Dementium II.
Love pixels? Fond of platformers? Is there a special place in your heart for the 8-bit and 16-bit era? Want to have fun? Yes!? Well, you’ve come to the right place, my friend. Mutant Mudds Deluxe is a “12-bit” action platformer full of pixels and platforming fun!
- 11
Dementium: The Ward
Single-player alternative to Dementium II — playable solo, no multiplayer required. Shares Action and Indie with Dementium II.
Classic DS horror reborn. Awaken in an abandoned hospital with no memory, no escape and unspeakable horrors lurking in the dark. The horror classic Dementium: The Ward returns, enhanced for 4K display and Steam Deck Verified, where every shadow hides a new threat, and every corridor a new nightmare.
- 12
Mutant Mudds Super Challenge
Single-player alternative to Dementium II — playable solo, no multiplayer required. Shares Action and Indie with Dementium II.
Here comes a challenge! Mutant Mudds Super Challenge!! Over 40 levels filled with malicious mutant mudds. This adventure is designed for super players; featuring a host of new platforming challenges and unique boss fights that will test your skills.