Video games keep people sitting in front of the TV and inactive. Video games keep people inside. They are generally sedentary activities, and can eat your free time up very quickly. Many video games are violent, and may lead to abnormal behavior. They are also quite repetitive, where the gamer does a similar task over and over again, trying to improve upon the last time they did it. This does not let the brain think about new and interesting things. Using video games for entertainment often leads the gamer to addiction, where they sacrifice their free time in order to play more video games.