Rooster Booster is a game of bluff with cards. Each of the roosters wants to sit on top of the ladder. However, there is only room for one on each step; some may lose feathers in the crowd. Stronger and bigger roosters may replace the smaller ones. Only the one who observes the pecking order may win the race! Or does a small, clever young rooster succeed in sneaking up the ladder and gain valuable points? Cards with values from 1 to 100 and which feature pictures of chickens are dealt out to the players. In the first round, players secretly choose a card and reveal simultaneously. After that, cards are played sequentially. The second place card wins and must be added, depending on its value, to one of the eight ladder steps. In doing so, some other chickens may slide down the ladder or fall off completely, in which case they bring only minus points. A game in the tradition of 6 nimmt!