id Software's Super Mario Bros. 3 PC port is in a museum now

The founders of id Software tried to pitch Nintendo on a Super Mario Bros. 3 PC port - that demo is now in a museum

Super Mario Bros. 3 PC Port Has Been Recovered By Museum

Super Mario Bros. 3 PC port by Doom creator id Software recovered by museum

Break the Con Down: - The NES Page

Museum obtains rare demo of id Software's Super Mario Bros. 3 PC port

Nintendo Takes Down Mario NFT Game from 1-UP Platform; Unofficial and Unlicensed by the Japanese Developer

Doom dev shares rare Super Mario Bros. 3 PC demo (update) - Polygon

Museum obtains rare demo of id Software's Super Mario Bros. 3 PC port

Id Software's demo for Mario 3 on PC is now in a museum

PC Demo of Super Mario Bros. 3 Safe In Museum - Game on Aus