Zipp-Zapp-Zahlendrachen

The game consists of two sets of 13 cards each. Ten cards in each set show numbers between 1 and 100, the other three show dragons. Each of the two players gets one set. Each player now plays one card, face down. The cards are revealed simultaneously. The player of the higher card gets the difference between the two cards in points. A dragon voids a "trick", nobody gets any points. The first player to reach 100 points is the winner. When all cards are played, each player takes up his/her cards again for another round.