List of Glitches in Super Mario World

This is a list of glitches that happen in Super Mario World.

Gameplay Glitches

Block Duplication

Mario duplicating a block

By throwing an item upwards into the corner of a block it is possible to duplicate the block, due to the fact that the item gets pushed out of the block while hitting it. Duplication is only possible with: turn blocks, question blocks, on/off blocks, note blocks, green star blocks, green switch blocks and yellow switch blocks. Blocks are only able to be duplicated with: P-Switches, shells, throw-blocks,

Carrying Two Objects

Multiple items are grabbable at once, however, it's not as simple as that. To double grab, you have to grab the lower ranked item 1 frame before the other item.

Credits Warp

By defeating enemies and loading and placing objects in precise locations in Yoshi's Island 2, it is possible to warp directly to the game's ending sequence. This is caused by the placement of the objects, which writes data into the game's memory and can be exploited to cause the warp.

Infinite Time

Collecting a power-up on the same frame the timer runs out will allow the player to continue controlling Mario after the timer hits 0.

Re-Useable P Switch

When a P Switch is pressed, swallowing it with Yoshi or grabbing it and taking it through a Warp Pipe will cause to the P Switch to return to normal and can once again be used.

Game Crashes

Berry / Power-up Freeze

Collecting a stored item on the same frame as eating a berry with Yoshi will cause the game to freeze. This will cause Mario to flash from red to green similar to if he touched a Super Star. It can also infinitely raise the player's coins, giving the player up to 99 lives in the process.

This glitch can only be deactivated by quitting the level, or resetting the game.