Developer: Nintendo EAD Group No.4
Released: 2015, Wii U
Super Mario Maker is every Mario fan's dream come true; the ability to make their own courses. Longtime fans and newcomers can experiment with all possibilities like putting wings on blocks or enemies, and even stacking a ton of Piranha Plants on top of a Firebar. It was so well-received, it even got a 3DS port.
This game contains a LOT of leftovers including items with different graphic styles, early variants of items, and even leftovers of items from an earlier iteration of Splatoon!
It is quite an interesting read.