The rules for CBI, ACF, and NAQT have some similarities. All are based on individual games involving two teams of four players each. A toss-up question is read first. If a player signals and answers the toss-up correctly, the player's team receives 10 points, and is read a bonus question which only that team has a chance to answer. If the player answers the toss-up incorrectly, a player from the opposing team may signal and answer.
Players work individually on toss-ups, but work together as a team to answer the bonus questions.
There are also tournaments held throughout the year by individual teams. These teams may use one of the three standard sets of rules, or an entirely different set of rules. It is up to the team holding the tournament. OK, now we'll get serious.