I was a bit confused at the first level because I thought that all dwarfs I collect would need to go to the exit with me by switching and I missed the instruction on hitting "enter" to move on to the next level when you are at the door. So I restarted the game thinking it was a but that I could not switch or end the level - lol. Then I understood how to play it and start progressing along just fine. Good job making this game.