Where Am I?

Where Am I? is a short horror game created by Mark J. Hadley, the same man responsible for Slender: The Eight Pages. Released on November 12, 2012, the game was completed within 48 hours, as part of a Ludum Dare competition, where game creators are challenged to make an entirely new game from scratch. Where Am I? incorporates the static/fuzz effect used in Slender, when the player looks at him. In the short game, you walk through a seemingly endless maze, although eerily when you turn around, the previous hallway can disappear, and a new hallway is created when you look away. The screen gets progressively static as you venture further into the maze... and there's something in there with you.

Link: https://archive.org/details/where-am-i
(Original website does not function, anymore; game was originally played online).