Super Mario 64 Direct

: You can return to Cool, Cool Mountain for a harder rematch against the Big Penguin in the "Big Penguin Race" mission.

While the game does not have a formal "post-game" save state (it resets to the castle after the final Bowser battle), reaching 100% completion unlocks specific rewards: Super Mario 64

: In the desert, circling certain pillars can trigger specific events or coin spawns. Post-Game Content : You can return to Cool, Cool Mountain

: Running around the post that the Chain Chomp is tethered to three times will set it free, allowing it to break the bars behind it and reveal a Power Star. : You can return to Cool