Great single player so far. As with the other cods, I always get really into it. Multiplayer is a little laggy right now, but it just came out so it will be ironed out soon enough. Best part tho is the Zomie mode! Only 1 map so far, and its pretty good, but again, with multi it lags a bit and that means death in this mode. When the lag gets ironed out, it'll be even better.