The plumber had a number of fantastic outings across both consoles, but Mario's first 3D foray on the Wii remains one of the best in the series, as well as one of the best 3D platform games ever created. Super Mario Galaxy took everything you knew about the characters and the world they inhabited, and ported them into space. The result was a dizzying and spectacularly well-designed platformer, spanning 42 galaxies, with no fewer than nine different power suits to aid you in your task (collecting stars, obviously).
The level design was near perfect, the pacing sublime, and the graphics stretched the capabilities of the Wii, but without any loss of fidelity or frame rate. The use of gravity added a new dimension which bolstered everything great about its mechanics, but without making it confusing. A technical triumph, which the sequel built on even further.