Hey that's a fun little polished game, I like it! I got to 109. It's an oddly calming experience, especially at the beginning where all you do is chase the cheese, not being bothered by the birds. The music greatly contributes to that and I really like it when the sound takes off later and adds to the sense of increasing speed and danger. The graphics and little animations are also well made (love the little touch of the mouse spinning when collecting cheese)! All in all it all works together very well.
Some suggestions: - You could make even more of the concept of the music intensifying later in the game, adding more layers, and even totally transforming the experience by adding more visual effects, like stars in the background or different parallaxing layers, to give an even greater sense of progression. - Sure there could be more variety in the enemies or other collectibles, the game could be extended like this later. - Apart from the arcade-like enemies - have you thought about making relaxation / meditation games? Sometimes it's enough just floating through the skies and satisfyingly collecting multiple pieces of cheese in a row.