First non-Valve videogame to be the most played game on Steam

On 27 August 2017, the battle royale survival shooter PlayerUnknown’s Battlegrounds (Bluehole) temporarily topped the Steam charts for people playing the game at the same time – more than 800,000. It was the first time that a game not published by Valve, the makers of Steam, had achieved this since Steam's initial release in 2003. As of 6 September 2017, it had the second highest ever peak players on the Steam distribution platform, behind Valve's iconic MOBA Dota 2, but, amazingly, ahead of Valve's long-running multiplayer FPS Counter-Strike.

Despite being in Early Access, PlayerUnknown’s Battlegrounds had earlier set a glut of other Steam records for concurrent players including most peak players for a non-Valve videogame and most players for an Early Access game.