Super Mario World ǀ Unintended Power Status (Powerup Incrementation) [RTA]

This is my attempt at a tutorial to a powerful glitch in SMW called Powerup Incrementation. This glitch allows Mario to be at Power Status not intended normally, which allows for additional glitches. In SMW, Mario can only be either small (Power Status 0), Big (PS 1), Cape (PS 2) or Fire (PS 3). The game specifies Mario’s Power Status by a value between 0 and 255. The Powerup Incrementation glitch allows you to put Mario at PS between 4 and 255.
For this, you need a Yoshi and be Fire Mario (PS 3). Go to Yoshi’s Island 3. Basically, for this glitch, Yoshi has to spit a null sprite on the Rotating Platform at a precise X-position, facing right. To have a null sprite in Yoshi’s mouth, you have to perform a block duplication to have two Yoshis. In SMW, only one Yoshi can be seen at a time. With one Yoshi, eat the shell and ditch it. Now, the second Yoshi will spawn with a null sprite in his mouth. Quickly go to the left Platform. Place Yoshi at precise position, facing right. When Yoshi’s mouth is aligned with the background’s mountain top, spit the null sprite. If done correctly, you will increment your Power Status by 1 unit. Start-Select to exit the level and repeat the procedure to go to the desired Power Status.
When Mario’s Power Status is higher than 3, you can spawn additional unintended sprites. For very useful lists of unintended item spawning, look here :
Hope this video can help you in your quest to master SMW famous (and awesome) glitches.
My setup: I use an original Japanese Super Mario World cartridge played on a Super Retro Trio 3 Console (PAL version); I thus played in Real-Time Attack [RTA] without Saved States. Crappy video captured using an ‘EasyCAP’ USB adapter (S-Video signal) and ‘Honestech VHS to DVD’ software. Video editing done using Shotcut free software.

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