Entertaiment is the act of keeping attention and interest, or the activity that people do to keep themselves interested. Entertaiment can be something as simple as smiling or laughing, or something as complex as a movie or video game. Entertaiment also refers to any activities or actions that are done for pleasure and recreation, such as art or sports.
Many forms of entertainment have developed over the years to meet the needs of different audiences. For example, one group may find dogfighting entertaining while another may find it reprehensible. Entertainment often hits on themes that the brain was shaped to react deeply to, such as social backstabbing and murders.