Start with Super Sonic on the sound test (bottom right) play sounds 04, 01, 02, 06. Start with Hyper Sonic on the sound test (bottom right) play sounds 04, 01, 02, 06, 04, 01, 02, 06.
You have to enter them and complete the puzzle to get an emerald, 7 times. Now that you have super sonic, continue normally until mushroom hill zone. You should see knuckles walk out of a tunnel, so enter it and you should find a flashing big ring. Enter it and stand on one of the emeralds to start the challenge.
The game does pay out, as contestants can win varying amounts of money depending on where their chips land. However, the game is based on chance, so there is no guaranteed payout for any specific contestant.
No contestant has ever landed all five chips in the center chamber, which has the highest dollar value [3] To date, the largest amount of money ever won at Plinko isR$39,200 [4] To maintain consistency, there are only ten Plinko chips, and they are locked up after each use [2]