I love game jams for that very reason! You end up learning so much in a small span of time! I learned more about gameplay and dynamics between players (ie. how to make a game more or less fun). I had a bug where all my keys populated at once, so I fixed it so it was one at a time. Then, it became boring for people to play, so my "fix" actually made it worse. ;) So, I went back to have all the keys out at once to give players more to do. Not something I would've learned had it not been for this jam! :)