Steam key from The Humble Indie Bundle 7

"In the dark and mysterious world of Closure, only what you see exists. Manipulate lights to phase objects in and out of reality in this multiple-award-winning puzzle game. Play as a strange spider-like demon who explores the stories of three human characters through beautiful, eerie environments such as a decrepit factory, a murky forest, an abandoned carnival, and the strange, surreal realm that connects them together."