What we talk about when we talk about videogame addiction.

The payoff of sex, music, and drugs? The guaranteed satisfaction of more music, sex, and drugs. According to this animated video from AsapSCIENCE, this Epicurean triumvirate stimulates our brains' supply of a neurochemical called dopamine, which always leaves you wanting more.

In the same way that a drug-induced dopamine surge leaves you craving more, music becomes addictive — the dopamine tells your body it was rewarded and creates a desire to seek out more.

And why not games? With all the purely positive reinforcement—leveling up, increasing you top score—isn't "you're doing great" nearly always predicated with, "but you could be doing better!"?