Welcome to Scratch in Scratch in Scratch! You can make a project within a project by another person that's remixed from that same person's project, recreating the thing he used to code that project! That was confusing, wasn't it? Just click the green flag (the one inside the project) and listen to Scratch Cat's instructions. Obviously, this version of Scratch is very limited (since it's built within Scratch in Scratch), so you can't do much. Credit to myself for the original project.
