Contra is a freeware modification for Command and Conquer Generals: Zero Hour real-time strategy game. It's a big project started in 2004. It adds many new units as well as numerous new upgrades, new general's powers and buildings. It also adds new sounds, maps, bug fixes, enhanced graphics, and other effects, as well as three new generals. There are lots of people playing in multiplayer.
Ahhh Contra... Such an amazing mod. I am forced to give this an 8, because I'm a new member. I would definitely give this a 9.5 though. It adds many cool units and also adds 3 new generals. It makes each general awesome, giving each one a different personality and taste. I would certainly recommend this amazing mod.