A good game! I really enjoy it, I like the difficulty curve, you're able to create a gradual difficulty and not jump start to the hardest one XD but i have to say the last part is really difficult, it seems the rocks are falling endlessly and the birds are way too annoying, maybe if you can reduce the difficulty on the last part just a little bit that would e great! Another thing, the lack of music really makes the game feel a bit empty and no SFX for being hit is also genuinely weird, considering that you spend 6 hours on this kinda makes sense. But overall this is a good entry, Well done :D