Contra is a freeware modification for Command and Conquer Generals: Zero Hour real-time strategy game and one of the first mods for this game. 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.
A must to play, specially if you're looking for special effect.
This mod can have another general from another nation to add more fun.
You must play it to enjoy it, than the game plays you !!!