This was my first ever sci-fi RPG. I bought the book years ago and now I am very pleased to have the PDF. Everything is here to play what is many consider to be the best sci-fi RPG around. Some of the "tech" seems outdated to our newer eyes of course (computers that weigh tons and only run 6 or so programs) and you can still die in character creation. But this is the "Red Box" of Traveller and it is still great fun. A great game of our Futures Past.