A skipping game is a popular playground game that involves hopping on one foot over a series of squares drawn on the ground. The most common version of the game is known as HOPSCOTCH, which is a nine-letter word that can be used to describe the game. Players must throw a marker into the first square and then hop over it on one foot while trying to avoid stepping on any of the lines. The goal is to reach the end of the course without making a mistake.