Dementium II

First-person horror shooter set in a hospital with shifting realities

Atooi · Released Oct 20, 2026

Reviews: Very Positive; 98% of 119
Recent reviews: Not enough recent
Players: 8; daily peak, Oct 28, 2026
Steam Deck: Untested
Last update on Steam: 4 days ago; Oct 24, 2026
Minimum PC: 4400; 4 GB RAM · 0.8 GB disk; Full requirements

What is Dementium II?

This single-player, first-person horror shooter follows William Redmoor, a patient accused of murdering his wife. You explore a treatment center, an abandoned village, and the surrounding countryside, fighting monsters while holding a flashlight alongside your weapon. You carry healing items for later use and save at designated points, while defeated enemies stay dead.

For you if...

+you enjoy horror that mixes shooting, exploration, and puzzles
+you like switching between retro and modern visual options

Not for you if...

−you want cooperative play rather than a solo game

What players say

98% of 119 reviews are positive

Players praise how closely this version preserves the DS original. The horror atmosphere and music also draw praise.

Screenshots and trailer

Dementium II system requirements

Minimum: 4400, 4 GB RAM, 0.8 GB of disk space.

As published by the developer.

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Minimum

OS: Windows 10 (or later)
Processor: Intel or AMD Dual Core at 2 GHz or better
Graphics: Intel Graphics 4400 or better
Memory: 4 GB RAM
Storage: 800 MB available space
DirectX: Version 12

Does Dementium II have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Single-player

Does Dementium II run on Steam Deck?

Untested Not yet tested by Valve on Steam Deck.

PC version details

DRM: None declared on Steam
Controller: Full controller support
Platforms: Windows
Achievements: 37
Steam features: Cloud saves, Family Sharing
Languages: Full audio: English.

Does Dementium II use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam