TurboRisk is the classic "World Domination Risk" game, where you are battling to conquer the world.

Features:

Support for both human or artificial intelligence players, up to ten per game.
Customizable rules.
A smart and customizable interface that speeds up cards playing, attacks and troops movements.
Large selection of AI players, each one with its own "personality."
Context sensitive help.
Statistics window that shows counters for territories and armies.
Optional log window to track the game.
Windows 7 and Vista theme support.
Large selection of maps.
A companion program to create your custom maps.
History of the played games and ranking of the players.
"Quick setup" feature to save the entire configuration of the players.
Menu option to download news and updates from the TurboRisk homepage.
Full-featured companion IDE to edit, compile and test your artificial intelligence players, and a simulation environment to test them.

MajorGeeks mirrors are portable, no installation required.