Really nice game!
The gameplay is very smooth, the art is pleasant and the music choice fit perfectly with the game. I really enjoyed playing the game, and it was actually hard to stop (I stopped after 10k points)!
I would like to add just a few comments. As it has already been said, it would be interesting if flying far away was more rewarding, because it really feels like you don't want to explore a major part of the map. Also, I missed lots of the sentences in the tutorial by accidentally doing what the tutorial wanted me to do.
Thank you very much for making this game!