Megafuck is an implementation of Brainfuck.

The Brainfuck programming language is an esoteric programming language noted for its extreme minimalism. It is a Turing tarpit, designed to challenge and amuse programmers, and is not suitable for practical use (from http://en.wikipedia.org/wiki/Brainfuck ).

http://gendev.spritesmind.net/forum/viewtopic.php?t=601