In Katzekartonen, two players compete to end the game with the most cats in the boxes of their color. Play occurs in two phases: first, there is the "Experimental Design." Place boxes of your color into the lab room game board. But be careful, your opponent may place their boxes inside yours, Changing an opportunity for you to score to one for them.
Once all the boxes are placed, it's time for Cat Herding! Try to place more cats in your boxes than your opponent. But cats are tricky, and rarely stay where they're placed! Place a cat beside another, and it will jump to another box, which may cause the next cat to jump, which can cause the next... It could be a whole cascade of chaotic cats. Can you tame the chaos to herd more cats I to your boxes and force your opponent to cause a "Cuckoo Kitty" and end the game?
This game utilizes a unique take on the tile-laying genre by adding a layering component and a secondary movement round. Its "strategic chaos" gameplay makes it fun for veteran "crunchy" players and new gamers alike.
—description from the publisher