The official invitation to Eastergarden 2011 in Norway. This is a real-time executable, or "a demo", for short. It is a product of the demoscene, an underground collective of programmers, graphic artists and musicians who do these types of things for fun.
Music by Gloom / Transistorbass (Bent Stamnes). Code by Kusma (Erik Faye-Lund).
Download the executable here: pouet.net/prod.php?which=56218