Despite some simplification of graphics, a couple of layout problems, and a smaller page count when compared to Aslan, the level of detail given in Vargr make it a worthy addition to the Alien Modules series and the rules themselves. With the release of this volume Mongoose has tacked what are arguably the “easier” aliens. While Traveller has a reputation of its aliens not being simply “humans in rubber suits,” the Aslan and the Vargr are the most human of the aliens in Chartered Space. A bar has been set. It both frightens and encourages me that looking at Mongoose's future release schedule no more Alien Modules are mentioned. We can hope and assume that the rest of our beloved aliens will be detailed and perhaps hope and assume that Mongoose is taking the time to make sure those modules are as good as the bar they have now set.