My game is going to be some kind of merge between an incremental and a mining game. Originally I had planned to having crafting and items in the game, but there's no way I'll have time to even make a dent in a system like that. Instead it'll focus on really juicy mining and an upgrade system.
After a week's worth of work, I have the mining mostly done. I'll be looking into the upgrades next, and possibly sounds and music.