It's on the original game boy, he used a Gamecube Game Boy Player with a TV recording device to get a direct feed on what he was doing.
Fastest Time To Complete "Super Mario Land 2: 6 Golden Coins" While Sticking Tongue Out (Game Boy)
It's on the original game boy, he used a Gamecube Game Boy Player with a TV recording device to get a direct feed on what he was doing.