a bit different from the usual but there are quite a few problems that keep it back, and they go thus.
on medium level the game is hardest at the start and easiest at the end, the last parts of the game are just "moping up" the reaming cities until you win with extrodinarly little or zero challenge, I would of liked to play the other settings of difficulty but I just got bored on the start of the second play through. However in my own oppion I don't think it would of made that much of a difference, the game's notion of difficulty is one-third more or less cash at the start depending on if you selected easy or hard , this just means that if you may have to wait for reserves to fill up at the very start, rather than the difficulty level the whole way through the game being increased or decreased .
the humour is.. how to put this.. uninspired, however a few of the background animations your employee's do at there job are humours, unfortunaltly later on a few of the new employees just "phone it in" and (too me at least) are a bit too excessive to work, eg. one of the phoned in ones is a office worker doing a handstand on the ...the... i actually dont know what he was doing a hand stand on (i think there stairs,?) , the other attempts at jokes such "a human took an arrow to the knee" aren't really funny although they are small and short enough to ignore ,so although they don't add anything they don't take anything away either.
also the game tells you things you just dont need to most of the time,howther at the same time it doesnt tell you that by holding + you can summon your army far quick and in a far less boring way.
as a last note, the game appears to have a bug with regards to the load function, I used it during my second playgroup and rather than loading my new game it opened up my old one during the time when I was close to beating the game, on top off this my reservers of 31 million and my zombie population had been wiped out.
on the whole neat idea but the comedy and the gameplay arent that good.