Yahtzee Category is a popular dice game where players roll five dice and score points based on the results. The categories for scoring are ACES, TWOS, Threes, Fours, Fives, Sixes, Three of a Kind, Four of a Kind, Full House, Small Straight, Large Straight, Yahtzee, and Chance. ACES is a category where players can score one point for each ace they roll, while TWOS is a category where players can score two points for each two they roll.