World of Warcraft (abbreviated to WoW) is a massively multiplayer online role-playing game (MMORPG) released in 2004 by Blizzard Entertainment.

RuneScape is a fantasy MMORPG.

World of Tanks is a massively multiplayer online game.

Guild Wars is a massively multiplayer online role-playing game (MMORPG) series.

Active Worlds is an online virtual world where users assign themselves a name, log into the Active Worlds universe, and explore 3D virtual worlds and environm…

The Mana World is a free 2D open source MMORPG.