Just simply add yourself, remix, and you are done! ADS: I made a new project 2-Player PONG! http://scratch.mit.edu/projects/11897831/ The newest add yourself!: http://scratch.mit.edu/projects/16178447/ I will post more "add yourself" projects and some other fun stuff!
I drew everything by myself! Check out my Pokémon Battle Simulator! http://scratch.mit.edu/projects/11797106/ If you add yourself please don't change the other's sprites. Just don't. So yeah that's it... have a great day!