Short answers, pulled from the story.
Dementium: The Ward is a survival horror first-person shooter for the Nintendo DS in which the player controls William Redmoor, a man who wakes up in an abandoned hospital with amnesia. Redmoor discovers through newspaper clippings that authorities believe him to be a murderer, and he must fight through creatures across seven floors to reach the basement, where a supernatural figure called The Doctor awaits.
Dementium: The Ward was released in North America on the 31st of October 2007, published by Gamecock Media Group. A remastered version for Nintendo 3DS followed in North America on the 3rd of December 2015, and in Europe on the 11th of February 2016.
Renegade Kid, a studio founded by Iguana Entertainment alumni, developed Dementium: The Ward. It was the studio's first game. After Renegade Kid dissolved in 2016, the intellectual property passed through Gregg Hargrove's company Infitizmo and later to Jools Watsham's studio Atooi.
Renegade Kid originally pitched the concept to multiple publishers as a Silent Hill game for the Nintendo DS, but Konami turned them down. Gamecock Media Group agreed to publish an original title instead, leading the team to create Dementium: The Ward as their own intellectual property.
The DS version of Dementium: The Ward sold more than 100,000 copies worldwide.
On the 22nd of September 2008, the Japanese Association of Psychiatric Hospitals published a protest against the DS version, asking it to be removed from shelves. Their stated reason was that the game uses the tradition of psychiatry in name but uses imagery of attacking patients.