CleverMedia: World Conquest: A Shockwave version of a classic strategy game.
Conquer Club: Free multiplayer variation of the board game. Offers player rankings, alternative maps, individual and team games, and a community.
Dominate: Offers moderated gameplay, a ranking system, game documentation, and a discussion forum. [Membership required for some features.]
Global Combat: A variant where turns are taken simultaneously. Offers a player manual, rankings, and online gameplay.
LandGrab: Web-based strategy game with many extra features such as custom maps, teams, leaders and fortresses.
Warfish: An online, by invitation only Risk based game which uses a dynamically created image for board display.
World at War: Play this turn-based game with 22 maps, including Risk's classic map.