The world of Minecraft is a deep and dense place, filled with practically impossible creations and folks who are willing to dedicate untold hours to amazing feats of construction. Case in point - this user who made a gigantic Game Boy Advance and also a version of Pokemon Fire Red to play on it.
Yep, they built this brick by brick to creat the box of the Game Boy itself and then the controls and images for the game. Apparently quite a lot of it has been built and there's more to come. It looks pretty amazing.
We'd by lying if we said we fully understood how these creations are put together and they look pretty awkward to use but it is amazing what people can put together given enough time and determination.