Click the right arrow to speed up. Click the left arrow to slow down. Click the up arrow to jump. Jump over the rolling balls. Remix this project and turn it into something interesting.
I exported the Scratch brick background, imported it into Photoshop, doubled the size of the canvas, and then copied the wall into the four quadrants. I imported it as a sprite. The program zooms in to the sprite 200%, then moves it from right to left to simulate the cat moving forward. The wall sprite then resets back periodically to simulate an infinitely long walk.