Cool! Interesting stack too. I've been holding off on Carp only because of the disclaimer on the GH page (about it being a research project). So, it's nice to see it being used successfully in a real project!
Well, this game it's kinda a research project in the end :P
But the only problem that almost was a blocker for me it's the limitation of importing C fixed arrays (I couldn't, fortunately I could workaround this), otherwise, the language worked fine.