Thanks so much for playing and for the thoughtful feedback! I agree that the difficulty sways back and forth quite a bit - it was way harder than I had imagined it would be to tweak each color/level to be different enough to be noticeable but still possible. I was taking inspiration from Tiny Wings which has a lot more variation in the size of the hills and placement of the coins which I think makes it a lot more interesting and fun. Glad you enjoyed it and appreciate your review :)