Triangular Block

Triangular Blocks are magenta triangle-shaped blocks with faces that are located at the bases of certain walls. They are primarily found throughout Dinosaur Land and first appear in Super Mario World.

If the Mario Bros. run onto a Triangular Block, they are able to continue their sprint by running up the wall that the block is placed against. This technique is required for getting over tall walls that they are unable to fly over. Yoshi is unable to use Triangular Blocks, but if he runs onto one, he bounces high up. If a Koopa Shell hits a Triangular Block, it also bounces up.

A prototype sprite sheet revealed in a 2017 interview revealed that circular and square variants of a Triangular Block were originally going to appear.

Triangular Blocks are also found in World-e of Super Mario Advance 4: Super Mario Bros. 3, more specifically in the levels Slidin' the Slopes, Sea to Sky, Castle Dash, and Caped Escape. In addition to appearing at the bases of certain walls, Triangular Blocks also appear between walls and ceilings, allowing Mario and Luigi to run up walls and onto ceilings.

Triangular Blocks appear in three episodes of the Super Mario World cartoon. One is first featured in "Ghosts 'R' Us," where Yoshi (who can, staying consistent with the games, only bounce on the block) briefly uses it to travel into Wizenheimer's haunted house and save Mario, Luigi, Princess Toadstool, and Oogtar. During a later episode, "King Scoopa Koopa," in an attempt to escape from the Chickendactyl-turned Cave People, Mario and Princess Toadstool run up a Triangular Block leading to a Star Road. In the episode "Born to Ride," Mario, Luigi, Princess Toadstool, and Yoshi use a Triangular Block to drive up the wall in their motorbikes to avoid Duke, Lulu, and Rockman. Rockman attempts to drive up the wall by using the block, but he fails and crashes (the block is also shown to frown as soon as Rockman fails).

In New Super Mario Bros. U, while the Triangular Block does not appear, Mini Mario has the ability to run up walls as well as run straight down walls. In Hotel Mario, Roy Koopa runs up the wall of his HardBrick Hotel without the use of a Triangular Block, something he also does in his boss battle.