You start with 20 coins. It costs 1 coin to start the slot machine. Press the start button to start the machine. Press 1 to stop the first slot. Press 2 to stop the second slot. Press 3 to stop the third slot. If all three slots have the same character, you get 10 coins. If two of the slots have the same character, you get 5 coins. If all three slots have different characters, you get nothing. Don't run out of coins!
Based on Nickelodeon's SpongeBob SquarePants.