Soul of the Ultimate Nation, called SUN for short, is a hack and slash MMO developed by Huxley creators Webzen. The game was originally slated to be published in North America in late 2007, but the game's status went silent and slowly slipped off of everyone's radar.
SUN features a quicker style of gameplay, more akin to a game like Dynasty Warriors than your standard MMO. To perform this feat, the game breaks the world map up into zones created by players in towns, very much like creating your own match in a first-person shooter. Players create these fields in order to hunt down monsters, solve missions, or complete quests.
Players can also take objectives to assult areas in a siege-esque manner, where many players create rooms to assault one objective. In these cases, successful and unsuccessful sieges affect how the other in-progress games play out, altering the difficulty of the battle to show the turning tide of one side winning or losing. The game does feature persistent cities where players can mingle, much like it's first-person shooter brother, Huxley.