What does ZM stand for? Zombie Madness? Zephyr Melody? Zebra Mashup.
No i have not played zm, does that make my opinion any less valid. Does someone need to make a film to know if it is good or not? The same applies with mapping. I may not have played zm, but i can tell you when the map looks good or not. The dev texturing makes this map look lazy. Some areas look more detailed than others. Some areas just looked rushed. Making the skybox dev too makes it look even more rushed.
It's a zombie map...it could use dark spaces, flickering lights and dark walls. It could be the sort of map where the users jump at every corner, firing wildly into unseen creatures. It could have been something special, but instead it is a sparse dev runaround.
Once again, I'll ignore the ignorance. :)
ZM is Zombie Master (hurr).
If you've ever played zm_crocodile (http://www.zombiemaster.org/smf/index.php?topic=6227.0), you would realize that the map uses nothing but dev textures. That's obviously what the OP was going for, he wasn't lazy or bad at mapping. You gotta realize that he's not making the map to 'your all-knowing godly standards'.
It's supposed to be a sparse dev runaround. Learn and educate yourself before you go flying off the handle.
This is a very cool map resembling to zm_crocodile or noodle, it has a keycard that you have to use to disarm bombs throughout the map, yes this is for Zombie Master.