Adaptation of the XKCD comic of the same name as a simple game. This game is licensed under the GPL.
The content of the comic licensed under Creative Commons Attribution-NonCommercial 2.5 License from Randall Munroe.
The comic can be viewed in it's original form at the following link. http://xkcd.com/1110/
Idea to turn that comic into a game came from Chronotron on Twitter.