I don't think it's a problem at all except for the small issue that PUBG is an Unreal Engine game and there's a possibility that Epic's inside information about

I don't think it's a problem at all except for the small issue that PUBG is an Unreal Engine game and there's a possibility that Epic's inside information about PUBG benefited their development of Fortnite. It's all just speculation (and a settled lawsuit?) but it's an awkward piece of the genre's history.