Windows & MacSeptember 7, 2012[2] Closure is a puzzle-platform game developed by American programmer Tyler Glaiel and artist Jon Schubbe with music and sound by Chris Rhyne.

Originally available as a Flash game on the website Newgrounds, a full version of the game was later released for Microsoft Windows, Macintosh,[2] and PlayStation Network in Spring 2012.

[3] Closure is a puzzle-platform game that centers on the concept of light.

The player can therefore walk through walls or fall through the floor based on where the light is.

However, this also means the player can fall to their death accidentally by neglecting to stay inside of lit areas.