It depends on your definition of “beatable,” really, since you never face Bowser, but there is a way to skip to the credits sequence of Super Mario World in five minutes if you can execute a precise mutli-step process that initiates a glitch.
Until recently this glitch was so involved that it had only been done in tool-assisted speedruns, but the human desire to push further knows no boundaries, and someone has now done it on an actual SNES with raw will. Twitch streamer Minecraft SethBling (don’t look at me, I didn’t name him) began the game, went to the level “Yoshi’s Island 2” and went through several specific steps: first he had to fool the game into letting Mario carry an exploding block and a P-Switch at the same time, then he had to juggle them while avoiding a Charging Chuck, then he let Yoshi loose but had to make sure his hatching animation happened offscreen, and then he had to set about ten Koopa shells in a row and destroy them in very specific positions. The result? All these tasks were rewriting the game’s memory, and when SethBling executed the final glitch, the screen froze and reset in the middle of the credits.
Why does all this work? There’s a full explanation, but it will only make sense if you’ve studied the code of Super Mario World as thoroughly as these people have. Good luck with this.
See the full video of the trick below.