Look at the in game tutorial. Press s to skip tutorial. Possible Random Rewards. 1. A bigger paddle for 30 seconds. 2. Gain 20 coins multiplied by your CpH. 3. Lose 20 coins multiplied by your CpH. 4. Change your CpH by 1.5 times. 5. Nothing. It's a 1/5 chance for both.
Caleb Medina and Shawn Mahler