PlayerUnknown’s Battlegrounds left early access on PC last year and enter early access on Xbox One the same year. Since its debut, the game has gained massive popularity, with the developers stating the game has reached 50 million copies sold and 400 million players on Xbox One and PC.

Taking mobile into account, which is free-to-play, the game’s numbers skyrocketed. PlayerUnknown’s Battlegrounds is now on sale on Steam for $19.99 in celebration.

“We’re genuinely humbled by PUBG’s ongoing success and growth, and we’re incredibly optimistic about the game’s future. We’re going to keep working on new content and improvements for all versions of the game. We know there’s still so much we can do to make PUBG a better game for our players.”

PlayerUnknown’s Battlegrounds is now available for PC, Xbox One, and mobile devices.