I notice this with social games especially. The whole levelling, achievement and overblown rewards system is designed to give a dopamine kick regularly, up unti

I notice this with social games especially. The whole levelling, achievement and overblown rewards system is designed to give a dopamine kick regularly, up until you need to pay to proceed. It's almost like a drug. In fact, that's how cocaine works. With ADHD, it's even worse. The mind craves stimulation as there's a distinct lack of dopamine in an area of the brain. Games amongst other things give this area nice kick, which is why we see hyper focus.