The Fun meter controls how well you can do stunts. To increase it, do stunts.
The Karma meter keeps opponents from hitting back after you hit them. To increase it, always X to apologize to racers on your team after you accidentally hit them. Note: Apologizing to opponents too much will decrease its value.
Combine flips with spins after a jump or land on only two wheels for extra points.
The Speed meter controls how fast your kart can race. To increase it, always drive at full speed and make large come-backs.
Press Right Analog-stick Up to crouch down and drive faster.
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