English: Red Kaizen Kendama
If you look closely you will see a ball with a string. The ball has a hole in it. The picture shows the ball on the wooden spike. There are three cups. Two toward the top and one at the bottom. The object is to swing the ball on the string so it lands on one of the cups or the spike. As you can see the cups have different sizes. The bigger the cup the easier. The spike is the hardest.
Here is a video to show how it is used.