Is an upcoming three-dimensional (3-D) puzzle video game by Jonathan Blow, an independent developer and the creator of Braid. The game was announced in August 2009 and is scheduled for release in 2012 for PC,  Xbox 360,  and PS3.  In interviews, Blow described the work as "an exploration-puzzle game on an uninhabited island."  A playable demonstration version of the game was available to play at the Penny Arcade Expo in September 2010, allowing the player to move about parts of the island and solve selected puzzles.

Gameplay for The Witness was first revealed at the 2010 Penny Arcade Expo in Seattle, Washington, and was described in-depth by Stephen Totilo of Kotaku who also posted video footage of game play witnessed at the event. The preliminary version of the game allowed players to walk about the island from a First-person Perspective Throughout the island are blue panels that players can interact with; those seen in the demonstration were primarily mazes, requiring players to draw a line from a starting point to a finish point. Other panels showed more complex mazes to be completed. Completing each panel unlocked other areas to explore or panels to complete.  Blow has stated that there is more to the game than these mazes, in response to concerns from players; to Blow, "the point is the magic that happens in the player's mind when he understands the subtle things that the mazes are saying - because the mazes aren't just puzzles, they are lines of communication that aggregate, become more complex and eventually say surprising things".