https://www.polygon.com/2017/9/22/16349536/pubg-fortnite-battle-royale-battlegrounds

Earlier this week, Epic Games announced the PUBG-inspired, battle royale variant of Fortnite, its long-in-development sandbox survival game, would be released for free on consoles and PC next week. This development isn’t sitting well with the team at Bluehole, the developers of Playerunknown’s Battlegrounds, who use Epic’s Unreal Engine to power the early access megahit. A press release issued by Bluehole this morning suggests the team is contemplating “further action.”

“We’ve had an ongoing relationship with Epic Games throughout PUBG’s development as they are the creators of UE4, the engine we licensed for the game,” Bluehole’s Chang Han Kim said in the press release. “After listening to the growing feedback from our community and reviewing the gameplay for ourselves, we are concerned that Fortnite may be replicating the experience for which PUBG is known.