Super Mario World

Enter a level with Yoshi, Cape Mario, and a Fire Flower in reserve. Position yourself under a berry in a way that you can get the fire flower and get the berry at the same time. If you happen to eat the flower and the berry at the same time, the game will freeze. Several things have been reported while using this glitch. Sometimes when the game freezes, your coin count will rise until you quickly have 99 lives. Press Start and Select to exit the leve. One person's game froze, horizontal lines appeared on the screen, and weird music kept looping over and over again. Then came a buzzing noise, and he was returned to the file select screen, with his file deleted. Thankfully, that's not normal. Even so, this is an interesting glitch to exploit every once in a while.

In the "Special Zone", wait about 5 minutes and listen to the music. It should start playing variations of the original Mario Bros. song!

For this glitch, you'll need to get Fire Mario and Yoshi in Yoshi's Island 2. Near the end of the level, there is a Piranha Plant in a pipe near a Dragon Coin. Stand on said pipe, about 2/3 of the way across. Pay attention to the Rexor to the right. When he is walking left and about 3/4 past the Dragon Coin, crouch, then press X+A simultaneously. Mario will jump off of Yoshi as Yoshi attempts to eat him, and you'll get some weird glitchy item in your item storage. (If you did it wrong, the game just crashes horrifically.) If you summon this item during a level, and then grab it, the level is then completed, provided that Mario does not die while attempting to walk off-screen. Note that the orb only works once, and you need to get it again to complete another level.

When your timer is about to reach zero, pick up a power-up at the same time as the timer reaches zero. You will hear the sound for when Mario loses a life, but he should not die, and should still be permitted to move around. The timer will remain at zero until Mario dies or the level is completed.

Beat a stage with your time ending in the same digit repeated twice as the tens place of your Star total, and you'll be awarded an extra life. Example: With seventeen stars, beat the stage with your time ending in eleven.