I've been a fan of David Gerrold ever since he wrote "The Trouble With Tribbles" for Star Trek so many years ago. So when he stated this new series, I bought it right away. I still don't see how the humans can fight the Chtorr and talk about winning. However, if you want to try a RPG based on the books, I can think of no better game to use than GURPS. Includes some material not in the original novels. Hard to get nowadays, but worth the effort.