This game has been Greenlit by the Community!

The community has shown their interest in this game. Valve has reached out to this developer to start moving things toward release on Steam.

Greenlight is being retired. For more information on how to submit games to steam, refer to this blog post.
Fan-Made Zombotron Discord
I went ahead and made a fan-made discord server for fans hyped for the new Zombotron!

Go ahead and join it here: