Well it depends if you really like playing the game for the campaign or for the multiplayer style, i love the CoD series because every single game that came out was pretty awesome. And when WoW came out with zombies i really got hooked to it, then Black Ops with zombies which was the next big hit i loved it as well and got every single DLC just because of it. But when MW3 hit with survival it was pretty fun but it gets boring after a while because there's no easter egg/short questline to do in it like Call of the Dead,Shangri-La.