Multiple players means multiple players in the game you moron. I can't believe you're so dense as you can't imagine a non human player in a game, especially in a computer game! Most five year olds are able to recognize when they're playing against an opponent. Human or CPU, it's a player that you are competing against. Nowhere in any definition except the constraints of your limited mind does it specify that the other players in a multiplayer game have to be human controlled. The fact that you legitimately are getting triggered by this would be hilarious if it didn't indicate a large problem with your cognitive reasoning.

Think outside the box. You've been playing a multiplayer game this whole time.