Use the arrow keys to move the ball left and right. Use Z to run. CHANGELOG v1.2: Made it so you keep running for a few frames after releasing Z. This make my SMB1 physics recreation 100% accurate to the original, at least when it comes to horizontal movement. v1.1: Added skidding v1: Created project
Thanks to Nintendo for SMB, as well as the thumbnail art and the book (it's from Doki Doki Panic). Big thanks to this analysis of Super Mario Bros' physics. https://web.archive.org/web/20130807122227/http://i276.photobucket.com/albums/kk21/jdaster64/smb_playerphysics.png