Glitches in Super Mario Bros.

Here is a list of Glitches in Super Mario Bros.

Note: This information was taken from the Mario Wiki, which is NOT on Wikia.

Blue Bowser Glitch
In any Castle level, the player must go towards the end, but not on the bridge, at about the middle of the platform before the bridge. The player must stay where he is, and when Bowser appears, he will have an underground like color palette, much like his artwork.

Bullet Lift
in 6-3, find a Bullet Bill and if jumped on it will fall like a string. Much like A pulley lift but much slower.

Hit the ax and keep it there
In any castle level, defeat Bowser with Fireballs. Then run and jump so the player touches the far end of the ax. The ax will stay there when scrolling to the Toad or Princess Peach.

Jumping damage and Magic mushroom glitch
In 1-1, when a Goomba or Mushroom is falling to the pit, jump up the blocks and you should be killed or lose a Power Up if using Goomba or powering up if used a Super Mushroom.

Red shell out of thin air
If you see a Green Koopa on top of blocks, make sure your screen is covering one of the blocks, where Mario can jump below and hit it. If done correctly, a Red Shell should pop out of nowhere.