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.
Heh... easy as always.
What's going on?
There is a Tunnel Network and a Radar Van hiding at the corner. After the tanks go away, the player can get exit the tunnel and rebuild his base.
*fires artillery strike at the tunnel network