This is the beginning of a multiplayer game. IT DOES NOT WORK YET. Set the "player number" to 1 (or any nonzero number) in the "Me" sprite's script of the second player. Use the arrow keys (up, down, right, left) to move your character. Your friend's character will move [crudely for now] based on their input.
This is a test project to make a multiplayer game. The artwork is from Scratch.