I've just done some basic groundwork.
Created a new repository with a blank project in it, filled in some basics, and started a psuedo-Design Doc to start fleshing out ideas.
We have the start of an idea that I might want to pursue - but I don't think it fits with any of the themes!! :P We are discussing it to try and see if anything else stands out as a fun alternative, but so far we've only succeeded in talking us more and more into this idea!
MTG Commander night tonight, so I won't get much more done, and then the GGJ kicks off tomorrow night so I'll be doing something else smaller over the weekend. I'll post again when I have more to show!
The repo is currently private but I will make it public when the game is done.