In celebration of The Binding of Isaac's two-year anniversary on Steam, the creators of Indie Game: The Movie released a 30-minute mini-doc on the game's origins.
The video, which you can watch above, features an extended interview from the special edition of Indie Game: The Movie with creator and Team Meat co-founder Edmund McMillen. While his partner, Tommy Refenes, was on vacation for the week, McMillen took a break of his own by making a "risky project."
"I'm the kind of person that thinks that really good art should upset some," McMillen said. "Not directly, but maybe in the way that they don't like what it's saying or it makes them feel weird. I don't think really great art is something that has mass appeal. Or maybe that's greater art."
McMillen proceeded to combine some of his personal experiences with religion with rogue-like elements and the basic outline for the SNES version of The Legend of Zelda. The result was Isaac.
The Binding of Isaac is on sale for a limited-time price of $0.99, 80 percent off its usual tag, via Steam. The console-bound remake of the game, The Binding of Isaac: Rebirth, will launch for PlayStation 3, PlayStation 4 and PlayStation Vita in early 2014.