Kernkraft 400 was released in 1999 by Zombie Nation, the German electronic project of Florian Senfter. The track took its hypnotic lead from a Commodore 64 game melody and became a chart hit across Europe in 2000. Sports fans adopted the riff as a stadium chant, where crowds sing along wordlessly after goals and during warm ups. That stadium life gave it a second life online, where short clips are shared for comebacks, victories and high energy edits, keeping the riff recognisable far beyond dance floors.