I've never made a 1:1 scale #Lego thing before, but the Lego #Gameboy is incredible. When I almost finished early yesterday morning, for a split second, my brain thought that it was real (with the Nintendo screen in).
Like, even the buttons push back with some rubber band behind them.
Like, look at this! All the functional bits!
Here's the unnecessary detail that I love they did: The Zelda cart interior (pictured) has a "battery", but the Mario Land (forgot to photograph) does not