Fans of Epic's battle royale hit Fortnite watched 574 million hours worth of content across all platforms in May.
Market intelligence firm SuperData claims that the title was by far the most watched game worldwide during the month.
It beat the likes of League of Legends, Playerunknown’s Battlegrounds, Hearthstone and Overwatch.
SuperData said that in May alone viewers watched nearly 700 million hours of battle royale content online. Fortnite accounted for 83 per cent of that.
The enormous popularity of Fortnite across PC, console and mobile has led the free-to-play game to more than $1 billion in revenue.
The success is largely down to the release of a battle royale PvP mode. The title was originally conceived as a cooperative PvE title with UGC elements.