Originally Posted by Pants
It's not an MMO. Planetside and Planetside 2 are MMO's.
Besides, Halo's SP has been getting better with every new installment anyway.
so what is it then? You log-in and you sit there and wait for 16 other people to join your game. Then you see that there are 5 guys named FULLBLOODKILLER or something stupid like that, then you get 1-shot every 5th step.