The case I chose was Cosmos:
I'm cheating a little and using models from the unity asset store.
The games going to be a "single screen" 2d platformer on a moon (or planet). You'll avoid asteroids and collect shiny things for points.
I might have gone overboard on the depth of field and I threw on a tilt shift camera effect to make everything look extra tiny. This weekend I'll focus on making the asteroids, and making sure the explosions are especially satisfying. >:)
There was another archived page of Cartridge art buried in the site link from the jams main page. Others might find this useful if you haven't picked a cartridge yet. (
http://famicase.com/chronicle/mobile/)