Rune is a third-person action computer game developed by Human Head Studios which was released in late 2000. The game is based on Norse mythology, showing the conflict between the gods Odin and Loki and the build up to Ragnarok, the end of the world. Built on the Unreal Engine, the game allows players to explore a fully realized Viking world.Upon release Rune received mixed though generally positive reviews. A standalone expansion to the game, called Rune: Halls of Valhalla, was released in 2001. It as well as its expansion was also ported to Linux by Loki Software. Ryan C. Gordon, a former Loki employee, would also later port Human Head's 2006 title Prey. A port to the PlayStation 2 was also released under the title Rune: Viking Warlord in 2001.