Zombie Mod - Singleplayer mod for Command and Conquer Generals: Zero Hour This mod adds new campaigns to GLA, China and USA, humans fight against zombies that want eat your brain P: Zombies are not playable faction its only Campaign side (maby in next version Coop mode too)
You can see here almost all structures and few units avilable in skirmish mode.
Zombies can build 2 types of Hives (gives food* to zombies), 3 types of barracks, tower, zombie ear*, death call, supply dock, command center, supply center and upgrade center (that damaged power plant).
*Zombie Ear - Building witch great shroud clearing range.
*food - power. because all zombie units needs power just like laser crusaders.