YouTube of the Week: Don't Press My Buttons Edition
Through clever level design, watch Super Mario World play itself. (It’s much more fun than it sounds.) They claim there’s no button presses at all, but Mario carrying a turtle shell seems like it needs a button unless I missed something. Originally found via Destructoid… after the jump, some more self-playing SMW fun.
TheGame is Dave Chalker, a lifelong gamer, freelance game designer, Master of Arts, and son of Jack L. Chalker. Dave is the Editor-in-Chief of Critical Hits and so runs the place. He is the envy of geeks everywhere because he's dating e, the Geek's Dream Girl. (Email Dave or follow him on Twitter).

I’m pretty sure he did pick up shells and hold on to them without any buttons being pressed?
Maybe so, but you sure didn’t go down pipes without pressing down. That, and I don’t think you would slide without a button press either – though clearly, they could have programmed something in there.
I wondered about that too, and it’s _possible_ that the “info box” he hit before going in the pipe had something to do with that. Or maybe it just gave the player time to hit one single down k key. Still impressive if that’s the only one.
The sliding I believe- it was a slidey game, especially when you got moving, and they could have just taken some surfaces from other levels and used the same physics.
the one thing that really bothered me was the part when he hit the music box to turn coins into blocks then slid back onto the “mole” (real Mario term unknown to me for that thing) he slids real close to falling off the edge and you have the “stumble” effect happen.
Whenever I played Mario games the only way I ever saw that happen is when I moved him to close to an edge myself, never seemed to happen on its own. But what bothered me was the fact that after just a few seconds it stopped, but there was no backface to suggestion player intervention.
Though if it was all none player controlled its pretty neat.