Mutators

Low Gravity: The gravity is divided by two.
Inverted Controls: Left is swapped with right. Jump is swapped with slide.
Blind Mode: The screen, except a small circle around your character, is black.
Trippin': The game is rendered several times, each moving independently with pinkish colours. Like if you had LSD.
Haste: Your character's speed is doubled.
Double Jump: Your character can jump again in mid-air.
Super Jump: The power of your character's jumps is doubled.
Sticky Walls: Your character walks on the walls as if it was on the floor.
Down Smash: When you press the slide button, the gravity is tripled.
First Person: The camera is place at your character's head, like if you were it.
Opposite Camera: The camera is on the other side of the track.
Pixelated: Imagine playing on a Gameboy Advance.
Rotating Camera: The camera rotate around the roll axis so your character is always head up.
Invisible: Your character is invisible.