COD zombies are among the best games I've ever played. My favorite zombies game would be bo3 because it remasters a lot of the good maps like Origins with better graphics. Bo2 has got the good and the bad. The bad is Transit and Die Rise. The good would be Buried, Town, and Nuketown. Bo1 has got pretty much has no bad maps. The mediocre maps would be Verruck and maybe Shi No Numa though that last one is very opinionated. Bo4 is in general is very mediocre (Continued in a different part).