Cute little game! I like how it's simple to pick up and understand, but the obstacles give it more challenge! I think the upgrades are decent, the shake one is especially useful to make use of the balls that got stuck to make the game less punishing. I like theme is used as not only buying the upgrades but also at the cost of loosing the balls, it's cute like an arcade game.
The sprite work is pretty nice, and I really like you have included the day and night cycle to make the environment feel less samey, though I would've liked if the obstacles changed over time to switch things up!
The music is stellar! I appreciate the length of the loop given the play time advised, and the way it progresses as time goes on.
Good Job : )