I'm glad you enjoyed! I tried to make my game more original than the other games in the jam by saying "the more you fail at finding, the less options there are". I don't want to reveal how to many places the key could be so I'm just going to say a little over 10. I'm a little upset that there was a game similar to mine but I didn't realize it until you pointed it out.
Also, can you please edit your comment revealing some of the keys locations? I wouldn't want anyone to be spoiled on where they are by seeing your comment by accident.