Command and Conquer: Generals - Zero Hour is an expansion pack for Command and Conquer: Generals. This expansion pack adds new abilities to each side, and a new mode called Generals Challenge.

Windows 98/2000/Me/XP or Mac osX, 800 MHz Processor (1.8 GHz recommended), 128 MB RAM (256 MB recommended), 8x CD-ROM, 32 MB DirectX 8-compatible video card, DirectSound-compatible soundcard