Most video games are created to be addictive. On the extreme end, you got the Civ series. It's been around for 30 years now. There is literally a joke website

Most video games are created to be addictive. On the extreme end, you got the Civ series. It's been around for 30 years now. There is literally a joke website called Civ Anonymous. "One More Turn" FPS games like CS really feed that dopamine hit when you get a kill, especially a head shot. You think the game designers aren't thinking about how to make that kill as satisfying as possible? Even the games of the 90s were engineered to be addictive. Tetris when you clear the blocks. Mario when you get a power up. Even Solitaire when you win the game and the cards go flying.