halo 4 war games pass

so i am confused, do you have to buy the war games pass dlc to play the halo 4 war games or is it just a normal dlc that gives you new maps

The Season Pass is just three map packs, along with some exclusive armour, but is 15% off.

All three map packs are going to cost 800 MS Points, so what ever the price of that is, minus 15%.