Subway Surfers is a mobile game built by SYBO Games and Kiloo, where you run endlessly on train tracks, dodge obstacles, and collect coins. Since its release in 2012, the game has crossed over 2 billion downloads. It’s playable on Android, iOS, tablets, and some smart TVs. What keeps it on people’s phones isn’t graphics alone. It’s the mix of instant gameplay, constant updates, and a design that...

