Subway surfer is a running game where a player runs through metro being chased by a dog and a police inspector. The runner unlocks many characters and collects coins. There are several editions of the game at present, but they are all played in the same way. When the player crashes into the obstacles on the way, he has to restart the game. There are other points and bonuses collected in the course of running through the busy metro. The points and coins gathered activate the special feature in the game. The game was first released in May 2014. It has several versions that run both on the iOS, android, iPad, and recently there are computer versions.