Released Oct 20, 2026 $14.99 Very Positive Not counted on Steam profiles yet

Dementium II

By Atooi

FPS Shooter Action Action-Adventure 3D Adventure First-Person Horror Psychological HorrorControllerRealisticZombies

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Reviews 104 Very Positive

Players now 11 Peak today 11

Followers, 30 days — Not enough history yet

Dementium II is a game tagged FPS, Shooter and Action by Atooi, released Oct 20, 2026. It has 104 Steam reviews (Very Positive). The Steam games most like it include Witching Hour, Reality and Belkız Ana.

The original Dementium II, restored by the team who made it. William Redmoor wakes with fresh staples in his skull inside an asylum for the criminally insane, where the walls peel back to reveal something worse. Fight, solve and survive the cult DS horror classic, now on PC.

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<a href="https://launchrivals.com/games/5342930-dementium-ii"><img src="https://launchrivals.com/games/5342930/badge.png" alt="Dementium II launch date" width="320" height="84"></a>

<a href="https://launchrivals.com/games/5342930-dementium-ii"><img src="https://launchrivals.com/games/5342930/badge.png?theme=light" alt="Dementium II launch date" width="320" height="84"></a>

Witching Hour 84% match · FPS, Shooter, Action
Reality 80% match · FPS, Shooter, Action
Belkız Ana 80% match · FPS, Action, Action-Adventure
Waves of Rotting Flesh 80% match · FPS, Shooter, Action
Quiet Office Floors 79% match · FPS, Shooter, Action
The LastOnesLeft 79% match · FPS, Action, Action-Adventure
Skinfreak 77% match · FPS, Action, Action-Adventure
Square Head Zombies - FPS Game 77% match · FPS, Shooter, Action
Invention 3 77% match · FPS, Shooter, Action
Square Head Zombies 2 - FPS Game 77% match · FPS, Shooter, Action

Steam data

Everything Steam lists for Dementium II · record updated 1 day ago

Steam store

Overview

App ID5342930

Release dateOct 20, 2026

Last change number40221564

Last record update1 day ago

App type: Game
Developer: Atooi
Publisher: Atooi
Steam profile: Not counted yet: Steam is still getting to know this game, so it doesn't add to game counts or achievement totals · checked 15 hours ago
Franchise: dementium
Website: atooi.com

Windows 64-bit

Controller: Full support

Single-playerSteam AchievementsSteam CloudFull controller supportFamily Sharing

Prices

Price · US$14.99

On sale0 of 41regions right now

Lowest seen · US$14.99Oct 24, 2026

Checked17 hours agoin 41 regions

AustraliaA$AUD

Every price change is kept from Oct 24, 2026 on. Pick a region below to compare.

Patches

Build	Branch	Updated
26152271	public	Oct 24, 2026

Depots

ID	Name	Systems	Size	Download	Manifest
228989	— shared from 228980	Windows	—	—	—
5342931	—	All	559.3 MB	523.3 MB	4367935175811021124

Branch	Build	Updated	Access
public	26152271	Oct 24, 2026	Open

Configuration

Install foldersteamapps/common/Dementium II

Executable	Arguments	Systems	Description
Dementium II.exe		Windows · 64-bit

Space per player10.0 MB

Filesup to 10

Save locations1

Root	Path	Pattern	Systems
WinAppDataLocal	Dementium II/Saves	.	All

Update history

Oct 25, 2026 · 14:01 #40221564
- common.store_tags.12 ~~3978~~ → 4004
- common.store_tags.13 ~~4004~~ → 3978
- common.store_tags.4 21 → 4191
- common.store_tags.5 ~~4191~~ → 21

Data from public Steam pages, updated daily; 5 days of history. LaunchRivals is not affiliated with Valve or Steam.

Dementium II

About Dementium II

Steam data

Overview

App info

Platforms

Features

Related apps

Prices

AustraliaA$AUD

Americas 10

Europe 5

CIS 4

Asia-Pacific 15

Middle East & Africa 7

Patches

Builds

Depots

Depots

Branches

Configuration

Launch options

Cloud saves

Update history

Changes to the Steam record