That's the point, so you can edit it, you can mess with it on the page I liked to, but not edit it.
Bla, if you look at the link... "mit.edu" do you think you are gonna need to search that up if it has viruses?
Here, you can play it on the link I have. If you wanted to change it or make your own projects, you download Scratch. You don't need to download it to play/use it.