1. Subway Surfers
Subway Surfers may seem like harmless fun, but it is made to keep players hooked. The game employs two primary strategies to make it addictive: progression and rewards.
Players feel happy every time they achieve something, and they want to play again—especially when a prize is given for each success. With no real ending, they continue to try to beat their scores. What starts as a quick game can easily turn into hours of play.