Dementium II gets a Steam page with an October 2026 release
Atooi has opened a Steam page for Dementium II. The Nintendo DS horror sequel is planned for October 2026, but no exact date is set yet.
The Steam page lists Atooi as both developer and publisher. The listing places Dementium II in the action, adventure, and indie categories, and positions the release in the Halloween window of 2026.
For now, the available information only confirms the release window. There is no official confirmation yet of extra content, new features, or any regional restriction for the PC version.
What happened
A new product page for Dementium II has appeared on Steam. The listing says Atooi is both the developer and publisher, and that the game has a planned release date in October 2026. The store page also notes that the title is not yet available on Steam and is scheduled for release in October 2026.
Dementium II is a Nintendo DS horror sequel that originally launched more than 15 years ago. The new Steam page follows the series’ earlier move to PC, after Dementium: The Ward was also brought to Steam. That means the series is returning to PC once again, this time with a separate Steam listing for the sequel.
The Steam page itself does not provide an exact day in October 2026 in the supplied context. It also does not spell out whether the PC version includes new content, extra features, or technical improvements. A secondary source does mention 4K output, updated controls, controller support, and Steam Deck verification, but those details are not confirmed in the supplied Steam listing.
Another point raised in the reporting is that this Steam version is said not to be the same release as the 2013 PC version of Dementium II HD. That distinction is not further explained in the available Steam information, so the official confirmation currently remains limited to the planned October 2026 release.
Timeline
2007: Dementium: The Ward originally launches on Nintendo DS as the first game in the series.
2010: Dementium II originally launches on Nintendo DS as the sequel to The Ward.
2013: According to secondary reporting, Dementium II HD launches on PC.
October 2025: Dementium: The Ward reportedly gets a Steam port, according to the supplied context.
2026-10-10: The Steam page for Dementium II lists a planned release in October 2026, but no exact date yet.
October 2026: Atooi puts up a Steam page for Dementium II with a release window in the Halloween period of 2026.
Background
Dementium II is described in the available sources as a classic Nintendo DS horror sequel. The new Steam listing positions Atooi as the team behind the PC release, bringing the series back to PC once again. The store page places the game in the action, adventure, and indie genres, matching Steam’s categorization of the title.
The series has a clear history on Nintendo DS. Dementium: The Ward came first, followed by Dementium II as its sequel. In the supplied context, Dementium: The Ward is also said to have received a Steam port earlier, which makes the new page for Dementium II part of a broader return of the series to PC. The available information does not mention a new storyline, extra chapters, or any content expansion for the game itself.
A secondary source says the new Steam version is not the same release as Dementium II HD from 2013. That matters because it suggests Atooi is bringing out a separate PC release rather than simply repackaging an older PC version. Even so, the official information in the Steam listing remains limited to the planned October 2026 release, without further technical specifics in the supplied source text.
The timing of the listing is also notable because the planned release falls in October 2026, right in the run-up to Halloween. The combination of a horror series, an October release, and a Steam page with no exact launch day makes it clear that Atooi is making the title visible to PC players early, while the precise release date is still unknown.