The main menu is actually a little tutorial, which I love !
However I don't know if I played the game the way it was meant to be. I never was able to hit the fast flying birds and without that it does get kinda repetitive, maybe I missed something?
The shop looked nice and I was curious to try them out, but grinding the dollars with a very slow moving stone took a bit too long for me. If I didnt miss anything, maybe make the first upgrades a bit cheaper, especially in a jam where there are so many games to play ;P
Congrats on the game :)