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.
Hooray! We've given Tanya the unique ability to call in a Little Bird at her location, offering rapid transport to anywhere... anytime. Comes at a little cost of $800 and can be called again when destroyed. But be careful, she might be more vulnerable this way. Pick your tactics wisely, or try your luck.