Nice mechanic. It's sad that you weren't able to finish your game, but it has potential for the future, maybe? Also, it is cool that you still uploaded your game, because game jams are about trying and doing something, everyone has different skill sets, experience, different amount of time to work on a project, so it's completely fine to have a not finished game, at the end of the jam. Keep it up, and I think one day you will make awesome games!