Press Q to switch between camera modes. You can use the arrow keys to pan when in 'camera lock' mode. Is it running a bit slowly for you? Pressing G will toggle the graphics options. Turning the quality down may improve things!
Parallax is the effect of moving layers of a drawing at different speeds to 'imply depth,' or make it look 3D! This was a little scene I made years ago in GameMaker, and I thought it would be fun to port to Scratch. I remember spending days figuring out the math behind moving the layers correctly, but this one only took a few hours fortunately! Original project video: https://www.youtube.com/watch?v=8sw-KPaCr6U The music was made by Yoco, a friend of mine. I feel this wouldn't be what it is without his composition!