Best CoD since Cold War, and that was the best for an age. Multiplayer is brisk, dynamic, and most of all, immense fun. Running an Underkill ghost gunkata loadout in objective-based modes, and having a ball.
Finished up all of the zombies missions, solo, and loved the entire journey, (a few bugs aside.) Outbreak always felt like it needed more, and DMZ fell flat for PvE due to the constant threat of a 6-man rolling you while you were on a boss. MWZ is the perfect blend of both gameplay designs, with none of the downsides of either.
Even the campaign was a good time, as long as you swallow the length.
Don't understand the reviews. Just goes to show how detached and irrelevant the ppl trying to make a living writing about games are, relative to ppl who actually play games.