I know about the problems in training, but there wasn't enough time to fix everything. There are two of us programmers, and the training was completely secondary (it has fewer questions, so it's really hard for new players to get through the training). As for the endless fall, you can restart the level on Q, but we didn't make a hint about it, so you could only find out about it by pressing ESC in the main game. This is our first 3-day GameJam. Before that, there was another one that lasted 7 days, and to be honest, it feels like not many people will play our game, which is a little sad, but we had fun making it.