Untitled sleep game
The untitled sleep game is an unreleased Nintendo game only known from patents. It is a project for the Nintendo Quality of Life initiatives, and it's not currently known if the project will be brought to fruition.
Similar to Pokémon Sleep, Wii Relax and Sleep Clock: Record and analyse your sleep patterns, if released this game will encourage players to sleep better.
The inventors include Yurie Hattori, Masahiro Kondo, Kazuhiro Hosoi, Eizi Kawai. It involves an unknown peripheral that can project and display an image, and detect when the player is sleeping and awake. A patent describes it being able to display a message after the player wakes up, such as "You had a nice sleep. Try to have sufficient sleep hours".