Overview
Black Out (also known as Sleep) stars an unnamed sleepwalking character who walks forward steadily, with the player utilizing various tools to guide the "sleeper" throughout the level. The game uses the SNES Mouse, and is essentially an enhanced version of Game B from Gyromite (which also involved guiding a sleepwalking character); while Gyromite simply had the player raise or lower pistons, Black Out has a number of tools for the player to use.
Aside from being promoted by a flyer included with the Japanese version of Mario Paint (which mentions a release date of late 1992), the game seems to have remained mostly unknown until a build was found as part of the July 24, 2020 Nintendo leak.
Notably, the idea of an SNES Mouse game about guiding a steadily-walking visually-impaired character eventually saw the light of day as Mario & Wario.
