My favorite zombie map is definitely TMG Christmas. http://zommods.com/tmg-christmas/

This map doesn't ever get boring to me, it is a fairly sized map, with lots of detail. It has alot of fun challenges and a fun easter egg to complete. The weapons are also really cool as well.

Tweet: https://twitter.com/RicoFrico21?lang=en

wow this amazing! one of the best maps ive played!