Review key concepts and vocabulary with this game focused on important facts about body systems. Use it as formative assessment, a large or small group game, or as a spiral review. This I Have... Who Has game on body systems is a great way to review, assess or have a discussion. There are 24 cards in this game. This game focuses on the respiratory, circulatory, nervous, muscular, urinary, and skeletal systems as well as the different organs for the upper grades. There are 40 cards in this game.