Ether One is a first-person adventure game developed by British independent company White Paper Games. It was the studio's debut game and was originally released for Microsoft Windows on 25 March 2014. A PlayStation 4 edition was released on 5 May 2015. Ether One took around three years to complete and was released to positive critical reception, particularly for its atmosphere and immersive themes, while its narrative divided critics. The game's portrayal of dementia in the Jean Thompson character was also praised by numerous critics, such as The New Yorker and Kotaku.