Welcome to the Nuketown Zombies Project Early Access. Basically, Nuketown was supposed to be released with a lot more content (secret, game modes, etc.) but I had a lot less time this year to move forward effectively in its development.
After thinking for a long time about the right thing to do, I decided to release the map with regular updates so that the players doesn't wait too long. Therefore, the roadmap will allow you to see how the updates will unfold.
I apologize for the wait, I hope you enjoy this first sample.