Blackthorn is an amazing stand alone addon for Rogue Spear. The story is on par with the original Rainbow Six. The missions are some of the most challenging, but not frustrating, in the entire series. I still haven't completed the last one, although I'm still working at it. The 'new weapons' were nothing special, though that's easily remedied with one of the many fan made weapons pack available on the web. All in all one of the best games ever made! Hopefully Raven Shield will continue this legacy. Bravo!
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