Miyamoto: Mario's Dash Started as a Bug, Became a Feature
In a Casa Brutus interview, Shigeru Miyamoto reveals the famous B-Dash in Super Mario Bros originated from a collision-detection bug that the team kept because it made the game more fun. He also discusses other development quirks—like the Hidden Block and Cheep Cheep ideas—crediting Takashi Tezuka and the entire team for the collaborative process behind Mario's creation.