Ball turbo spin , unity 3d

How i can add a turbo spin , to a rolling ball game , when i press the key space ?

Make an animation, or Rotate the ball faster without translating it. Maybe add in some flashy Particles.

Is your ball a rigidbody? If it is, you can use AddTorque(). You will probably also need to increase the maximum angular velocity of the ball, as by default unity has it set very low.

How does the ball spin unity