Ragnarok Online 2 is no longer titled “The Gate of the World” an is now subtitled “Legend of the Second”. Everything has been overhauled and RO2 is ready to retain its no.1 MMO crown back.
The name “Legend of the Second” implies that it is a sequel to RO2 and not just a different game.
Ragnarok Online 2: Legend of the Second
Ragnarok Online 2: Legend of The Second is an upcoming remake of Ragnarok Online 2: The Gate of the World the MMORPG created by Gravity Corp. of South Korea and is the sequel to the popular MMORPG, Ragnarok Online.
In July 2010 it was announced the first iteration of the game had been scrapped, and a new version, Ragnarok Online II: Legend of the Second, would be developed in its stead. The new iteration of Ragnarok Online II returns to the systems and mechanics of the original Ragnarok Online while keeping the 3D engine. The game engine was changed several times since it’s predecessor opened its long running closed beta in 2007. It was mentioned that the new version of Ragnarok Online 2 will be using the Gamebryo engine. The previous iteration used Unreal Engine 2.5
source : wikipedia