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.
Changes the Game User interface (GUI) which enhance parts of the game multiplayer lobby
Changes the Game User interface (GUI) which enhance parts of the multiplayer game lobby.
[Usable in Contra Multiplayer Server/VPN without Mismatch]
Just extract the file at your game directory (which is Command and Conquer General Zero Hour Folder)