BONK begins with three contestants wearing helmets and holding soft foam mallets. The helmets are outfitted with sensors that ring in when the helmet is hit. In order to “bonk in” and answer a question one must hit him/herself on the head with the mallet.
The first round is strictly self-inflicted bonking. Contestants score points for a correct answer, lose points for an incorrect answer. The questions are relatively simple so speed matters. But be careful, as the occasional trick question gets tossed in.
When a contestant reaches 10 points the round ends and the low scorer is eliminated. The re-maining two contestants face off in the “Back BONK” round. Here the questions get tougher and opponents may not only bonk themselves, but may bonk their opponent. Points are scored if your opponent is incorrect when they have been “back bonked.” This round provides for more spirited bonking than the first round.
The winner of “back BONK” is a finalist and is given the opportunity to win a prize by taking the Bonk Challenge. There they are asked to name 10 of an item such as Casinos, Cartoon Characters, Pizza toppings, etc. within 30 seconds, while the Bonk Babe bashes you silly. It's not as easy as it sounds.
Three new contestants then repeat the process and a second and third game are played, producing three winners. The three then compete in a single round final known as the “BONK Bash.” This is a free for all where all three contestants may hit themselves or any of the others in a race to 10 points to determine the champion, who is then crowned with the mirrored BONK disco helmet and winning the grand prize.