Do you know this games where you play hours and dont even notice? Or you really dont want stop playing and always think just 15 mins more? What games did you get addicted to? Post them and the reason why you think it happened! Or do you know general techniques to achieve this effect? I am really wondering what mechanics and game design can make a single player game kinda addictive. Answers like "Make a good game" arent helpful. I really want to look in detail at the techniques used in games. Also In this topic I want to regard only single player games because multiplayer games have other design to achieve players being glued.