Corum Online is a free to play MMO from overseas. However unlike the other clones out there, this game puts a fresh spin on PvP. The PvP system is built in tandem with an instance based combat system. Guilds and Clans unite in order to not only clear dungeons and instances for loot, but also to claim those places as their own. Instances all over the world can be controlled and owned by guilds. Those instances give those guilds certain bonuses such as resources or even power. Not only that but you can train and summon your own guardians that will defend these instances for you while you're away.