Based on the open source RetroPie project, this device goes beyond the average retro gaming console build. In addition to the custom Lego enclosure, this device is wired up to mimic the behaviour of the original Nintendo Entertainment system. The cartridge door opens, the indicator LED lights up when powered, and the two "button" bricks on the front of the console are actually functional, faithfully recreating power and reset controls.
The on-screen UI is Jeff's own customized version of the stock UI that comes with RetroPie, adding better legibility as well as high quality game imagery and in-game video samples.
The Lego enclosure is created using Lego Digital Designer, fitting the Raspberry Pi inside snuggly while providing access to all of its IO ports.