It’s a twist on a game show that we’ll be running during exploratory testing week. There are 2 teams and a board of answers that nobody can see (this is the board I’m putting together based on answers to this Exploratory Testing Week 2021 - Testing Family Feud).
Each team puts forward one member to start, the host asks them a question and it’s a race to hit the buzzer first. The first person to hit the buzzer gets to guess an answer from the board first. If their answer was the top answer on the board, their team gets to play to guess all of the other answers on the board and win points. Good example video here 
Details about our version of it are over on the event page.