Subway Surfers by SYBO, published by Miniclip

Subway Surfers is one of the most popular and addictive endless runner games in the world. You play as Jake, Tricky, Fresh, or hundreds of different colourful characters, who are trying to escape from the grumpy Inspector and his dog. You have to run, jump, slide, and surf your way through various locations, avoiding obstacles and collecting coins and power-ups.

Subway Surfers has now over four billion installs, which makes it the most downloaded game of all time!