PUBG Corp believes that Epic Games illegally plagiarized the Battle Royale mode, and has even gone as far as to comment its concerns that Epic Games might steal internal modifications to the Unreal engine and use it in their own game Fortnite. In any case, PUBG Corp found the concept actionable enough that just a couple of months ago they took Epic Games to court, filing an injunction in South Korean court against Fortnite and alleging that Epic Games stole their idea.
Except the lawsuit is over before it truly began, with PUBG Corp pulling out and sending a notice of withdrawal to Epic Games attorneys, according to GI Biz. As of now, neither company is willing to comment on the matter.
(Source: Games Industry)