From Perfect World Entertainment, publishers of Torchlight and Battle of the Immortals, War of the Immortals is a free-to-play action MMORPG based on ancient Greek mythology. In War of the Immortals, players find themselves in the world of Motenia, defending the legendary City of Atlantis.
World of Kung Fu was a 3D MMORPG from Tengren and VestGame Entertainment based on traditional Chinese culture, taking place in a realm inspired by Kung Fu. The game featured unique weapon specializations, fluid combat, crafting, and endgame instances.
World of Warcraft/WoW is a MMORPG released in 2004 by Blizzard Entertainment. World of Warcraft takes place within the Warcraft world of Azeroth, approximately four years after the events at the conclusion of Blizzard's previous Warcraft release, Warcraft III: The Frozen Throne.
Wurm Online is a sandbox MMORPG developed by Rolf Jansson and Markus "Notch" Persson. The game is very player driven, and features an open, skill-based advancement system rather than classes, leveling, or quests. Wurm Online also features crafting, terraforming, mounts, ship and building construction, cooking, PvP, and much more.