Right, I've brainstormed some ideas and decided on The Chosen One™.
I am making a two-player board-game-style tactical medieval warfare game with smoke screens. Infact, the game is called Smoke Screen!
I've played some prototype games on paper (with temporary "units") and I think it could be quite fun. Simple to learn and hopefully with enough tactical options to make it interesting.
I don't have the full 48h due to other commitments, so my main goal was to complete something. Hopefully this is small enough to get something done.
Here's a very early mock-up: