Plot: Risk: Factions is a downloadable video game for Xbox 360's Xbox Live Arcade service, PlayStation 3's PlayStation Network, and Windows computers through Steam. The game was announced on January 12, 2010 for Xbox 360, December 21, 2010 for PlayStation 3, and March 8, 2011 for Windows. Wikipedia
Plot: Risk II is a video game version of the board game Risk, developed by Deep Red Games and published by Hasbro Interactive under the MicroProse label. It's a sequel to the 1996 version of Risk. Wikipedia
Plot: Lux is a series of turn-based strategy computer games, inspired by the rule system of the board game Risk but expanding it to function on any map made up of a graph of countries and the connections between them. Lux was developed and self-published by developer Sillysoft Games. Wikipedia