Ragnarok Online 2: The Gate of the World ( Korean : 라그나로크 온라인 2: The Gate of the World ; alternatively subtitled Epic of the Light ) Was a massively multiplayer online role-playing game created by Gravity Corp. of Korea and is the sequel to Ragnarok Online . Most of the game is based on Norse mythology . After entering a closed betatesting phase in 2006 and continuing through 2010 in Korean Open Betatesting, the game was reworked multiple times due to its poor initial reception. In July 2010 Ragnarok Online 2: Legend of the Second , would be developed in its stead. The new iteration of Ragnarok Online 2 returns to the systems and mechanics of the original Ragnarok Onlinewhile keeping the 3D engine.