The Tom Clancy’s Rainbow Six series has always been about realism and strategy, something that was perfectly encapsulated by the Siege entry. So, where does Tom Clancy’s Rainbow Six Extraction fall? The game maintains the realism of Siege, but it adds a new element in the form of Aliens. Yes, in this game you will find yourself dealing with aliens that are trying to occupy Earth in very important locations. Your focus is to try and stop them, while fulfilling a vast range of objectives.