Massively Multiplayer Online Role Playing Game
MMORPG is defined by Wiki as...
A massively (or massive) multiplayer online role-playing game or MMORPG is a multiplayer computer role-playing game that enables thousands of players to play in an evolving virtual world at the same time over the Internet.MMORPG as defined by TechWeb...
(Massively Multi-user Online Role Playing Game) A role playing game on the computer played by many people. An MMORPG differs from a regular computer role playing game because its environment is perpetual. People log on, join the game, take on their role and leave whenever they wish, but the game continues.
Although most computer games these days have some sort of multiplayer element to them, typically they are limited by the hardware capacity of the players equipment since a single players hardware can typically host 20-30 active connections at best. MMORPG's bypass these traditional multiplayer hurdles by allowing the players to connect to massive servers hosted by the gaming company itself.
MMORPG's are a virtual universe, (typically fantasy oriented) where you can create your virtual self and explore the world, meet other players, fight creatures, complete quests & 'save the world'.