I’m not really doing the mini-LD, but I am working on a new version of one of my LD games, Cave Miner from LD 15 (Caverns). I’ve already spent several weeks working on it and here is what it looks like now:

Most notably, I’ve added a lighting/shadow system. I also changed the gold into crystals and added some statistics at the top. It also has some sounds now (using sfxr).

There is still a lot to do: power ups, enemies, level exit, health system, light battery system, doors, keys, switches, teleport, elevators, more decoration and probably something with little bombs and destroyable blocks. And then of course a lot more levels, music, a title screen, menus, high scores, etc.