One of Mario's iconic abilities was actually just a glitch in the NES original, but Nintendo's Shigeru Miyamoto decided "it's fun" so "leave it as is"
Shigeru Miyamoto revealed that Mario's ability to dash across small gaps in the original Super Mario Bros. was an unintended bug. He decided to keep the feature because it was fun, and it has remained a staple in the series. This glitch-turned-feature is one of several examples discussed, including hidden blocks in the same game and significant glitches in other titles like Hitman, Civilization, and Street Fighter 2.
Retro Gamer
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