Subway Surfers is world's first game to reach 1 billion downloads on the Play Store

Subway Surfers made its debut on mobile devices almost six years ago, but the teams behind it never stopped supporting the game and adding new content to it on a monthly basis. According to developers, Subway Surfers was the most downloaded game of 2017.
We have achieved greatness by combining our strengths at SYBO and Kiloo. The continued growth of the game and brand is our focus, and we are excited about future releases, and the animated short films that are launching later this year. The players will have even more great content to consume.
source: SYBO