When I tried it a few months ago, there was quite a bit of content, though I only played for a few hours. I just launched it again and they've added a bunch of stuff, including multi-player.

Basically, since this is Early Access, the best way to make sure content will eventually make it to the game is to actually buy it.

I bought it back in July! Just haven't touched it since, heh. Good to hear it's getting more fleshed out :)

Ahh yeah, give it another shot, I think you'll like it. I certainly did!