In the beginning of time, the first God of the universe, Pan Gu, lived an immortal life. But with no subjects to lord over, Pan Gu grew tired of his solitary existence and decided to decompose his body into five elements-fire, metal, wood, earth, and water.
Source: The Game Website.
Perfect World (Chinese: 完美世界, commonly abbreviated as PW and W2), is a 3D adventure and fantasy MMORPG with traditional Chinese settings. Players can take on various roles depending on choice of race and choice of class within that race.
Characters develop skills over time with experience and level up via questing rewards and can use and upgrade physical and magical weapons, and team up with other players to fight against monsters in instances, bosses on the open world as well as other players.
Each player can join a guild (if accepted) and thereby be part of a 200 maximum player base with common goals to achieve. The PW map is broken into a large number of territories which gives guilds an option to conquer and govern such territories via Territory War for reward of ownership usually in the form of coins which are used back to benefit the guild and it's players.
Territory War is an 80 player VS 80 player strategic battle which has a 3 hour maximum time cap with each class belonging to a race having unique roles to perform and team work and strategy is key to sustain victory.
Perfect World is heavily based on Chinese mythology and are set in the mythical world of Pangu.
Source: Wikipedia, "Perfect World", available under the CC-BY-SA License.