Video shows id Software’s 25-year-old Super Mario Bros. 3 demo for PC

During id Software’s very early days, a demo was created for Super Mario Bros. 3. This wasn’t an ordinary demo, however, as it was actually running on a PC.

id Software originally created “Dangerous Dave In Copyright Infringement”, a recreation of World 1-1 featuring characters from John Romero’s Dangerous Dave. The Super Mario Bros. 3 demo was based on this. Nintendo was presented with it, but didn’t sign off on the project since they wanted to keep Mario on its own systems.

25 years later, a video showing the Super Mario Bros. 3 PC demo was shared by Romero on Vimeo today – watch it below. It’s a neat little piece of gaming history!

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