Chloe Varelidi is an indie game designer and developer. One of her projects, Pandemoji, is “a silly classroom game which uses a webcam and face recognition software to provide a playful opportunity for tweens to talk about their emotions.”
Her code is located here. The way the game works is a person stands in front of a webcam and watches “Pandemojis” (which are exactly what they sound like: panda emojis) fall from above. They then move and “catch” one to wear on their (virtual) face. A countdown is given and then a screenshot is taken. The goal of this is for the images to later be used in a classroom discussion of emotions and specifically how we express emotions through our facial expressions.