Ragnarok Online is a massively-multiplayer online role-playing game
(MMORPG) based on the fantasy manhwa comic series Ragnar ok by Myung-Jin
Lee.

The game is set in the Rune-Midgard world of Norse mythology which Ragnar ok
comes from that means “doom of the gods”. The game world is in 3D graphics
while the characters are drawn in 2D sprites done like a traditional style
console RPG.

Ragnarok Online DS