Sonic Dreams Collection
From Arcane Kids:
Sonic Dreams Collection consists of four minigames; Make My Sonic, Eggman Origin, Sonic Movie Maker and My Roommate Sonic. In-game menus introduce these minigames as unfinished Sonic game prototypes found in a development kit Sega created for its Dreamcast console.
Make My Sonic functions as a character creator, allowing players to change the coloration of a 3D model of Sonic and alter the size and positioning of its limbs, as well as selecting a randomly generated name.