How many missions per campaign are there?
There are 38 missions in total. Each of the GDI and Nod campaigns covers five acts, each with multiple missions within them. While the mission progression is largely linear, you have the chance to choose between which missions to complete first in some cases. You also have the chance to make decisions that alter the outcome of the game and offer up separate cutscenes. GDI and Nod duke it out in the first four acts almost exclusively until the Scrin show up and start slaughtering the human population in order to set up shop and rape the planet for Tiberium. Once both GDI and Nod campaigns have been completed (either can be played first and almost work better swapping back and forth between missions), you have the chance to play the bonus Scrin campaign that lasts four missions and is significantly shorter than the other two campaigns.
