I love the visuals! It looks very unique.
However, the game began lagging heavily about fifteen minutes in, which caused my browser to crash. I only made it to the fall area before the crash.
The lag spikes happened only when taking pictures, as far as I'm aware. The lag seemed to get worse depending on the number of cats in the photo, too. My game crashed when I tried taking a picture of about five cats.
For what it's worth, I'm playing the HTML5 version on Firefox, running on Ubuntu. I apologize, I don't have much more information to give.
Like the other commenter mentioned, I don't really understand what the "x10 900 per photo" upgrade does.
I really like the animations and pixel art; despite those issues, I think you all did a great job with the game. Good luck with development!