I don’t remember which iteration it was, but there is a game in the Dark Souls series where one of the bosses is a player that invades your game to be the boss.
It’s a cool twist on the PvP of the game where you can be invaded by a player at almost any time but you can usually opt out of the PvP but this particular encounter is needed to progress.
It’s a cool twist on the PvP of the game where you can be invaded by a player at almost any time but you can usually opt out of the PvP but this particular encounter is needed to progress.