Atooi is bringing Dementium II back on October 20, with a remastered Steam release of the 2010 Nintendo DS horror shooter. The studio calls it the cult classic, remastered: the original sequel rebuilt for a single screen, playable at up to 4K, with mouse-and-keyboard and full controller support, Steam Achievements, Steam Cloud saves, and a pitch aimed squarely at Steam Deck owners. It arrives four days from now, just ahead of Halloween, and roughly a year after Atooi gave the first game the same treatment.
Back under the Doctor's knife
Dementium II picks up where Dementium: The Ward left William Redmoor: on the operating table. He wakes inside the Bright Dawn Treatment Center, an institution for the criminally insane, with fresh staples in his skull and records that say he murdered his wife. A postcard in his cell, written in his own handwriting, tells him to run. Since the surgery, the hospital keeps peeling open into a nightmare version of itself, and the Doctor has a cheerful explanation for that: whatever was wrong inside Redmoor's head, they let it out.
Atooi says you don't need to have played the first game. Its own recap covers the essentials: Redmoor woke with no memory in a monster-filled hospital, newspaper clippings accused him of killing his wife, visions of his daughter pulled him onward, and a man in black calling himself the Doctor watched every step, until a confrontation in the basement that did not go Redmoor's way.
Flashlight and gun at the same time
The headline change from the first Dementium, both on DS and now, is that Redmoor can hold his flashlight and his weapon at once. The original game made you choose between seeing and shooting; the sequel lets you do both, and that shifts the series from pure tension toward something closer to a classic first-person shooter with horror pacing. Redmoor can also jump and crawl, which opens up larger environments than the cramped corridors of The Ward.
Atooi lists more weapons and more monsters, with each enemy type meant to need its own approach. Two quality-of-life rules from the DS sequel return as well. Enemies stay dead, so a cleared area remains cleared rather than restocking behind you. And there are save points plus a carry-anywhere inventory, which means health items go into your pocket for later instead of being consumed on pickup.
Crisp or crunchy
The remaster's main pitch is choice of presentation. You can run the game at up to 4K, or drop it down to a retro resolution that mimics the pixelated look of the original DS hardware. The same goes for lighting: there is a new, more realistic flashlight beam, or you can switch back to the original DS-style stencil light for an authentic look.
The DS original split its interface across two screens. This version fits everything into a single view and adds an on-screen mini-map to keep you oriented. There is one more option for players who want it harder: the original game played music to warn you when an enemy was close, and here you can turn that cue off entirely, so nothing tips you off before something lunges out of the dark.
Beyond the asylum
Escaping Bright Dawn is only the first act. Outside lies an empty village and countryside full of things that should not exist, and letters signed by Redmoor's wife draw him further in, telling him she is waiting. Atooi promises a hospital, the abandoned village and "places far worse" before the end.
The new release is Windows-only on Steam. Atooi's listed minimum specs are modest: a 64-bit Windows 10 system, a dual-core 2 GHz Intel or AMD processor, 4 GB of RAM, Intel Graphics 4400 or better with DirectX 12, and 800 MB of storage. The game supports adjustable difficulty, custom volume controls and Steam Family Sharing, and is in English.
Not the 2013 port
Dementium II has been on PC before. Dementium II HD, developed by Memetic Games, released on Steam on December 17, 2013, and is still listed there. The October 20 release is a separate product with its own store page, built from the DS original rather than that earlier port. Atooi describes it as the original game restored by the team who made it.
It also completes a pair. Atooi released Dementium: The Ward on Steam on October 27, 2025, at $14.99, so both chapters of Redmoor's story will be on Steam in their rebuilt form for this Halloween. Atooi has not yet announced a price for Dementium II. The store page is live now for wishlisting, and the game unlocks on October 20.
