Single-player games like Dementium II HD
Below are 14 single-player Steam games similar to Dementium II HD, 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 HD page.
Ranked picks
- 1
The Zombland: Enter at Your Peril
Single-player alternative to Dementium II HD — playable solo, no multiplayer required. Shares Action and Indie with Dementium II HD.
In this chilling game of survival you're on a mission to find your friend Marcus in the scary world of zombies. Marcus went into Zombland but never returned. Will you be able to save the kidnapped or become another victim in the zombie horde's grip? Remember they can do anything to stop you ….
- 2
Arizona Sunshine®
Single-player alternative to Dementium II HD — playable solo, no multiplayer required. Shares Action and Indie with Dementium II HD.
Built exclusively for VR, Arizona Sunshine® puts you and up to 3 fellow survivors in the midst of a zombie apocalypse. Survive solo or in co-op, handle weapons with real-life movements, and explore a post-apocalyptic world in VR. Putting the undead back to rest is more thrilling than ever before.
- 3
PATHOGEN X
Single-player alternative to Dementium II HD — playable solo, no multiplayer required. Shares Action and Indie with Dementium II HD.
An immersive, first-person survival shooter where you step into the boots of Special Agent Aiden Clark. Dive deep into a hazardous underground laboratory, tasked with the perilous mission of neutralizing a biological menace and securing a pathogen sample.
- 4
Left 4 Dead 2
Single-player alternative to Dementium II HD — playable solo, no multiplayer required. Shares Action with Dementium II HD.
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.
- 5
Dead Effect
Single-player alternative to Dementium II HD — playable solo, no multiplayer required. Shares Action and Indie with Dementium II HD.
Fight for your life in the INDIE SCI-FI FPS game fit for both casual and hard-core gamers with a passion for hunting down hordes of zombies. Prepare yourselves for the incoming nightmare!
- 6
ZOMBI
Single-player alternative to Dementium II HD — playable solo, no multiplayer required. Shares Action and Adventure with Dementium II HD.
London is falling. Are you prepared? The Last Blight is upon us. It was foretold. For the second time in history, a great plague has shrouded London in a fog of death. Big Ben tolls as thousands of unprepared die, or worse, are infected by a sickness more gruesome than death.
- 7
Back 4 Blood
Single-player alternative to Dementium II HD — playable solo, no multiplayer required. Shares Action with Dementium II HD.
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.
- 8
Depth
Single-player alternative to Dementium II HD — playable solo, no multiplayer required. Shares Action and Indie with Dementium II HD.
Play as a shark or a diver in a dark aquatic world and overcome your enemies by employing cunning, teamwork, and stealth. Depth blends tension and visceral action as you team up against AI or be matched with other players in heart pounding combat.
- 9
Resident Evil
Single-player alternative to Dementium II HD — playable solo, no multiplayer required. Shares Action and Adventure with Dementium II HD.
The game that defined the survival-horror genre is back! Check out the remastered HD version of Resident Evil.
- 10
SILENT HILL 2
Single-player alternative to Dementium II HD — playable solo, no multiplayer required. Shares Action and Adventure with Dementium II HD.
Investigating a letter from his late wife, James returns to where they made so many memories - Silent Hill. What he finds is a ghost town, prowled by disturbing monsters and cloaked in deep fog. Confront the monsters, solve puzzles, and search for traces of your wife in this remake of SILENT HILL 2.
- 11
Outlast
Single-player alternative to Dementium II HD — playable solo, no multiplayer required. Shares Action and Indie with Dementium II HD.
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.
- 12
9 Clues 2: The Ward
Single-player alternative to Dementium II HD — playable solo, no multiplayer required. Shares Adventure with Dementium II HD.
Solve the mystery of Mnemosyne Asylum!
- 13
The Life and Suffering of Sir Brante
Single-player alternative to Dementium II HD — playable solo, no multiplayer required. Shares Indie and Adventure with Dementium II HD.
A narrative-driven hardcore RPG set in a gritty world ruled by real but unrelenting gods. Set out on a challenging lifetime journey, where every choice has a price and entails consequences. Will you become an inquisitor, a judge, or conspire against the old order? Dare to decide!
- 14
Dementium: The Ward
Single-player alternative to Dementium II HD — playable solo, no multiplayer required. Shares Action and Indie with Dementium II HD.
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.