This old fashioned boardgame is based on the Whac-a-mole arcade. It's full mechanic, no need of batteries. The ghost comes out randomly and just must crash them as quick as you can. You launch the timer and you crash as much ghost you can. Each time you crash one, a counter increase from one. At the end of the timer, you add the 5 counters. The player with the biggest number wins. When you pronounce "Yakatapé", it means in French "You only need to bit".