Just finished my second 7DRL entry. This time around I have the player playing a skeleton trapped in the underworld trying to recover their mortality. The main gimmick is that your pieces or equipment are your body parts, and can be individually damaged and removed by your opponents.

Here is a link to the entry page if you want to try it out.
I also maintained a daily dev log on my blog, if you want to see some of the thought process that went behind creating it. Link to that is here.
Good luck to the rest of the entries, and to those still working on their game.

I really like the idea of Skeleton composed by bones being the hero

Just uploaded a manual and new version that should make the game easier to understand. If you've tried to play it but gotten frustrated at its complexity, now could be a good time to come back and try it again!

Here's the picture I made to describe the controls. Hopefully you're starting to get more of an idea how to play just from looking at this :).