Three Books of Known Space - Classic Sci-Fi Novels Collection | Perfect for Sci-Fi Lovers & Book Collectors | Great Gift for Readers & Space Enthusiasts

This book really deserves 4 stars, but I accidentally rated it five and can't change it. This book is a compilation of three other books, one of which is a collection of short stories itself. If you've read other Niven books such as "Ringworld", you'll feel at home in Known Space, though this takes place long before that one."World of Ptavvs" is an excellent book, one of the best SCI-FI books I've read. A telepathic alien that can make humans do his bidding is found after being trapped in statis on earth for billions of years. If he can find his equipment which is also in stasis, humanity may be doomed to be a slave race."A Gift From Earth" is a good book as well, but it didn't keep my attention like Ptavvs. The colony world described is interesting and there are some nifty surprises thrown in though.The other stories, which are interspersed with the two full-length books and told in chronological order, are a mixed blessing. Many are quite good, others are just so-so. I wonder why Niven was so fascinated with the "Organ Banks". That is a fine theme for a story or two, but they seem to be the base for much of his writing, including "A Gift From Earth".