One Contestant Won $30,000 By Mistake
The showrunners filmed a commercial in 2008, showing that it is possible to win up to 10,000 dollars using the Plink machine. For the commercial, they set the machine to 10,000 dollars for every time, so they could do as many takes as needed.

After the commercial was filmed it slipped their mind and no one reset the machine. The next time someone played the Plinko on air, she was surprised when she won 10,000 bucks three times. That was when the producers realized they’d made a grave mistake, but since it was their responsibility, they let her keep the 30,000 dollars.