The earliest cracks were simple .exe file replacements. You would download a patched generals.exe or game.dat (Zero Hour) and overwrite the original.
In Zero Hour, players take on the role of a general, tasked with leading their chosen faction to victory in various missions. The gameplay involves gathering resources, building bases, and commanding units to defeat enemy forces. The game introduces several new features, including: command and conquer generals zero hour no cd crack top