Ragnarok Online is a massively multiplayer online role-playing game created by Gravity based on the manhwa Ragnarok by Lee Myung-jin. It was released in South Korea on 31 August 2002 for Microsoft Windows. The game has spawned an animated series, Ragnarok the Animation, and a sequel game, Ragnarok Online 2: Legend of the Second. Player characters exist in a world with a player environment that gradually changes with the passage of time. Major changes in the features and history of the world take place as episodes in the RO timeline. This channel was generated automatically by YouTube's video discovery system.