One of the best 'classic' 3D Marios (along with Galaxy 2). Truly a culmination of everything that Mario 64 started, and a great send-off to the style until Odyssey reinvents it. I love this one more than Galaxy 2, in part due to Rosalina's Space Station and the tiny pieces of story surrounding the game, even though I recognize that the core platforming is even further improved in 2. That said, you can't go wrong with either. Also, this is the origin of Gusty Garden Galaxy, one of the best Mario tracks ever composed.