Early Access base building title Fortnite has been played by seven million people.

Developer and publisher Epic Games announced this milestone via Twitter (below), less than a week after it launched its Battle Royale mode.

It’s unclear exactly what this number means – seven million copies solid or just seven million people – but either way, it’s a pretty decent number for the title.

Fortnite launched at the end of July, selling half a million copies in its first 24 hours. Within three weeks it had hit 1m players, with Epic boss Tim Sweeney saying it was on track to be the company’s most successful game yet.

The firm announced its brand new battle royale mode in mid-September, with Playerunknown’s Battlegrounds maker Bluehole seemingly being unhappy with the game, taking issue with the fact Epic name-checked its title in its announcement.

Thanks to over 7 million of you who have played Fortnite! We want to keep the Battle Bus flying, so Duos and Supply Drops are available NOW. pic.twitter.com/sRx767u4aG

— Fortnite (@FortniteGame) October 4, 2017