This is an endearingly simple game in which opponents try to get their counters to spring into a muddy puddle. The plastic counters have four springy legs and a notch cut into them, so when you push down on the notch they jump. It is a little like playing tiddlywinks, but you use your finger to propel your pieces rather than another counter. The muddy puddle is a piece of cardboard with a hole cut out and it needs to sit inside the box to stay up. This arrangement works well, just as long as your child's idea of fun isn't squashing cardboard boxes...