I read in PCG about your little shindig here, I'm impressed, and I just have to say this:
I was displeased at the fact that there were no online servers yet people online (Look: Shoutbox).
I, however, thought that at least you would have improvised a single-player configurable NPC load out instead of just Multiplayer and Hosting.
You most likely are in the wrong version. Here's the latest: GG2_b40a
As for a "single-player configurable NPC load out," please remember that this is still technically a beta, and the coding capabilities of the contributors are limited to what GameMaker can do. Right now the top priority is to get all the multiplayer features out and stable, which will take a while.
As for now, give it a shot. The servers are often full, but don't give up. It's a hell of a fun game.