PlayerUnknown’s Battlegroundshas managed a staggering achievement, crossing 10 million sales. South Korean developer Bluehole announced the achievement early this morning, revealing thatPUBGhad attained the 8-digit sales number as of September 1. Launching March 23 inSteam Early Access,PUBGhas reached in less than six months what most games will never accomplish. And going by the numbers,PlayerUnknown’s Battlegroundssales are showing no sign of slowing.

Going by early sales numbers reported by Bluehole,PlayerUnknown’s Battlegroundsreached the first million sales within 3 weeks of launch.4 million salesarrived in just three months. And just 15 days ago, Brendan Greene,PlayerUnknownhimself, revealed the game had garnered 8 million total sales prior to gamescom. Sales are only speeding up for what’s quickly becoming 2017’s most surprising hit.

Helping to keepPlayerUnknown’s Battlegroundssales rising is its availability in many regions. 19 countries, including China and South Korea, are highly active for the online multiplayer game.PUBGonly being available digitally makes it extremely easy for regions where retail availability can often be constrained to buy and play. Its worldwide availability has allowed for its viral success to result in immediate, extreme sales numbers.

The harder question to answer is just howPlayerUnknown’s Battlegroundsmanaged to do it. There are many hugely successful video games, but are any of them comparable to whatPUBGhas done on a single platform, in Early Access, in such a fast amount of time? The concept of a multiplayer battle royale game has been done prior, but there’s no arguing thatPUBGhas delivered on player expectations in a way no game has previously. But that alone can’t be the whole story.

Whatever the reason,PlayerUnknown’s Battlegrounds' 10 million in sales is an incredible achievement and may only be the start of the game’s success. Expect to hear more about the game’s sales hitting even higher milestones in the months to come.

PlayerUnknown’s Battlegroundsis available now on PC in Early Access and willlaunch on Xbox One in 2017.