Super Mario Galaxy sends Mario on a journey across a series of small, gravity-warping planetoids in outer space, using unusual orbital physics to reshape traditional platforming. Players run, jump, and spin their way around spherical worlds, with gravity itself becoming a core part of navigating each level.

Its imaginative galaxy-hopping structure and inventive power-ups set it apart from earlier 3D Mario games, offering a steady stream of fresh mechanical ideas across its many stages. The result is widely regarded as one of the more inventive entries in Mario's 3D platforming history.