It's a really well made game and I really like the seesaw concept as I also had a few ideas about making a game about a seesaw. I like how it the gameplay changes up (even though I couldn't make it very far), and the circus theme fits the game very well, along with the music. I also really like the online leaderboard system which motivates players to get the highest score possible. Besides the learning curve, I can't really think of changing too much. I would maybe think about adding more space to the seesaw seat so the player has a little more room to land, but I'm sure you have probably thought of that.