Very serious! Loved being the coolest kid on the playground with my propeller hat and showing off to the other kids.
Got a pretty high score, but the gameplay just turned into switch out hands and spam the space button, unless I understood it incorrectly, so after one time playing, I have no real desire to play again.
However, the music is beautiful and the art is great too. Getting further into the game, I didn't even notice how a crowd formed around me, which was very cool and a nice detail :)