A game with programmable space combat written in Go

If you've played this, is it fun? I first heard of this general idea from the Minecraft guy and later from Eve Online folks (I don't know who invented it first) and it seems like it could be awesome, terrible, and everything in between.

The block-based unit programming reminds me a lot of Carnage Heart

I had a ton of fun with that as a kid, it was one of my earliest introductions to anything programmable and is part of what put me on my career path.