If you have seen this game anywhere else (except on SheezyArt) it probably was taken without permission AND it was the demo version. This is the final, complete version of this game.
Among them include a detailed storyline, ability to play as Luigi, a highly customizable Level Designer with sharable codes, three different FLUDD Power-ups, four different power-caps, and 64 Shine Sprites & 64 Star Coins to collect. Many levels and features are based upon it and other of Nintendo's games, but a variety of them are completely original. Super Mario 63 is a fan-game inspired by Nintendo's Super Mario 64.