i don't like play computer game

At worst, computer games are a waste of time, but they're definitely not gambling as long as you don't suscribe and bet money in some Casino site. The definition of gambling implies taking a high risk in order to get a higher return, mostly money. Some computer games are simply silly, other are highly entertaining and increase your perception and your skill, what traduces in mind training and can lead to a higher intelligence. That's why I like jigsaw puzzles (one never looses the pieces), and brainteasers like Sudoku (frome very easy to very, very hard). Give it a try! What I do not accept are those violent shoot'n kill games. Although they may sharpen your reactions, the context is far to violent.