Hi! Yeah, I get it. I figured that might happen, so I updated the game with a quick tutorial to explain the mechanic. Thanks for the feedback!
Thank you, I finally understand ! New heightscore : 29 !
The game is very polished and the concept is good. If I can give you some advice, when you have a game with such unique mechanics, it's better to give concrete examples of how to win in the tutorial because most people don't have the patience.
Congratulations on your first game jam, I love your game!