Billy Hatcher and the Giant Egg is a vibrant, 3D platform-adventure game developed by Sonic Team for the Nintendo GameCube. Released in 2003, the game ushers players into a whimsical world where the protagonist, a young boy named Billy Hatcher, is bestowed with a magical suit granting him the power to control eggs. Tasked with rescuing a fantasy realm from dark forces, players must navigate colorful levels, hatch a variety of eggs to summon creatures with special abilities, and roll oversized eggs to solve puzzles and defeat enemies, all while aiming to restore light to the world.