Atooi releases restored PC version of Dementium II on Steam
The PC release supports up to 4K, a retro pixel option, selectable flashlight styles and fully Steam Deck compatibility.
Atooi released a restored PC version of Dementium II on Steam on October 22, 2026, according to gamespark.jp. The port was restored by members of the original development team.
The PC version supports up to 4K resolution, along with an optional lower-resolution retro pixel look. Players can also choose between a modern flashlight style and one resembling the original version, and enemy approach warning music can be turned off.
The game has been redesigned for a single screen, with a minimap displayed on screen. It supports controller or mouse-and-keyboard controls and is fully compatible with Steam Deck, and it includes Steam achievements.
Dementium II is priced at 1,900 yen on Steam. Dementium: The Ward is 50% off until October 31, and a two-game bundle called Dementium Collection is also available.
Earlier releases
Dementium II was originally released for the Nintendo DS in 2010. In 2013, Memetic Games released Dementium II HD for PC, a version that received mixed reviews. Jools Watsham, co-founder of Renegade Kid and head of Atooi, recently said he had regained the rights to Dementium II HD and that version was not the true form of the game.
Quick answers
How much does Dementium II cost on Steam?
The PC version is priced at 1,900 yen on Steam.
Does Dementium II support Steam Deck?
Yes, the PC version is fully compatible with Steam Deck and supports controller or mouse-and-keyboard controls.