Description of the game from Spielbox:

Sheepworld - Schafchen zahlen (Sheepworld - counting sheep) is a fast-paced card game in which concentration, reactions and a sharp eye are needed! Black, white and red sheep are playing happily on the cards, but how many exactly? Count the sheep and quickly grab the right number card! The game was invented by Arno Steinwender and Andrea Steinhauser.