Man, there's just so much here. The ship-to-ship combat rules are simple enough that they fit with the system overall, but different enough that they really add something (and implicitly give a hint as to what kind of events you should think about introducing!). "Specials" add something fun to every character; if I had to offer any critique of the game at all, it's that I wish there were more examples of them to choose from (randomly or otherwise) for those players who struggle with coming up with their own. And the art! The map! The bestiary! Next time I want to run a game on Barsoom, I'll be reaching for this game.