this is my kind of games! if you keep working on it, a bit more feedback would go a long way. also, I'de suggest forcing the tutorial popup on the first play.
Thank you! Yes, the lack of feedback is a sore point - I wasn't sure on how to best implement it and concentrated on the many issues cropping up all the time.
And good idea with putting the tutorial more into the spotlight. For now I added a button to access it during the game.