By looking at the clips on YouTube, I felt in love with the Winner's Circle. Good thing
Pyramid is conveniently coming here in Italy soon
As a "honorary mention", let me tell about a nice little endgame that were used here in a few different shows, the "Ultimate Yes/No game"
both the winner and the loser of the episode play the game. The host goes back and forth asking yes/no questions to the contestants, waiting for a response. Most often they are prize trade offers like "Will you trade in $100 of your cash winnings for a brand new car?" or "You got a brand new car there. I can excange it for a brand new pair of flip-flops. Will you refuse this trade?", but some questions don't affect gameplay and are played just for fun (like "Tell us, you are being loyal to your wife, aren't ya?"). A flashing light tells the player when it's the right time to shout an answer.
The catch is that the contestants can't hear the questions as they are isolated by host-controlled earphones with some really loud music in there. They work just like the isolation booths on Twenty-One
When this rollercoasters ride of trades ended, the contestants won whatever they ended up with. It wasn't uncommon to see the loser walk away with more stuff than the winner, but the winner still had the chance to come back the next day.