Was PUBG the first? Didn't they arguably steal the idea from a movie? And isn't the concept of last man standing like as old as dirt? Not exactly the same but I

Was PUBG the first? Didn't they arguably steal the idea from a movie? And isn't the concept of last man standing like as old as dirt? Not exactly the same but I played assassin in the early 80s and it wasn't a new concept then. Arguably I feel like the idea is too simple to deserve any kind of protection. It would be like protecting "hide and seek" or "tag"