I did one of the falling simulator:) we choose it because we had an idea, and it was easy to make for our first time making games! And I also know another person who did it as a challenge to upload a game in less than 3 hours. I don't think anyone really did it because of laziness:) but it really is funny that there are so many of the same cartridge, I think the organizers are considering making a system for next jam so there are no repeated games