MMORPG: A MMORPG is a Massively Multi-player Online Role Playing Game, in the same market as EQ (Everquest), AC (Asheron’s Call), AO (Anarchy Online), UO (Ultima Online), etc. The game is run from central servers and players connect to them with a software client. Content is also provided centrally and there is typically no local version of the game, such as the type you might play on a LAN. The client is usually purchased from a retail outlet or downloaded and most MMORPG's are pay-to-play, which means some form of monthly fee is required to play the game. All characters are stored on the central server, so hacks and cheats for advancement are virtually impossible.

City of Heroes (CoH): CoH is a MMORPG set in the super-hero comic book genre. A much more detailed answer can be found by browsing www.cityofheroes.com or by clicking on the What is CoH? link to the left.