Real success of the game is just enough to activate the endorphins.
Sweden Gothenburg University study said that violent video games can contribute to player team's collaboration, also can be a very good control over the player's strong attacks and other bad state of mind. They found that even if the game will let players offensive, most of the games require teamwork to complete. So, for the player who just pursuit the feeling of attacks will not meet the others need and will not be able to play well.
From a biological point of view, the key of happiness is "young hormones," that we call endorphins. It is well known that biological pleasure experience comes from secretion of endorphins, and regulation, and endorphins are feeling directly involved in biological control. Real success of the game it's just enough to activate the audience the joy factor--endorphins in the body, from the Visual to the mental, physical stimulation the Player automatically generates endorphins in the body, to bring a natural euphoria. Make it back from back in the pure joy of the game.
United States psychology professor at University of Illinois at Urbana-Champaign ASE·kelamo and colleagues study on the participation of 40 older persons in the age of 60-80. They were randomly divided into two groups, a group of 23 hours of game trained in 1 months, other groups do not receive training. Training games entitled the rise of Nations, is a best selling video games. The game requires a player with the ability to handle multiple tasks simultaneously, including choosing the right military strategy, build fortresses, to manage the economy and to feed the population. Research results show that video game players "remain vigilant" to help improve the elderly's memory, analytical ability and capacity to address multiple conditions.