From the campaign:
Tic-Tac-Bull---- is based on the simple game of tic-tac-toe.
To begin, nine Tic-Tac-Bull---- cards are placed on the 3x3 grid so only the Categories are showing.
Your team chooses a square. The other team flips over the Category card and reads the story. Your team decides if the story is true... or bull----.
If you choose correctly, the square is yours, and you go again. Got it wrong? A new game card gets placed into that square, and it's now the other team's turn.
The first team to complete a tic-tac-toe row is the winner. How many rounds you play is up to you -- as are the penalties for getting caught with the bull----.