Thank you for the kind words! I kept the collision boxes for the trees super simple (boxes) to make sure the game would perform well in the browser. There were some instances where I accidentally placed the models rather than the scenes, so some trees appeared without any collision shape. I thought I had removed all of them, but perhaps I missed some. Even with the ones with collision, if you jump you can go through them.
Totally agree about the cloud movement. I wish I had spent more time making them feel better!