We have release NZA on Steam early access. We did loads of testing before taking the leap and are happy how the game plays at the moment.
Its great to play with friends, it gets more chaotic the more players and it supports upto 8 player madness. http://store.steampowered.com/app/378530
We are planning to do constant updates to the game adding levels, characters, funky weapons and of course have to add few more hats.
There has been a few youTubers giving the game a play through. Been great to see them respond to the game. Can’t wait to see some multiplayer youtube videos.