1. Play is engaged in by all people and many animal species as a way to build social bonds, learn skills, and reduce stress. 2. Play takes many forms like using toys for exploration, simulation, and games with goals and player choice. Pretend play allows for role playing scenarios and mimicking different occupations. 3. Video and computer games have blurred boundaries between types of play by combining elements like exploration, role playing, and simulations within interactive digital environments.