"Definitely one of the best gamebook series ever released, Blood Sword is an excellent fantasy gamebook series designed more for hard-core RPG players than casual readers. Set in "Legend," the fantasy world expoused in detail in Dave Morris & Oliver Johnson's Dragon Warriors RPG (which I might scan for this site at some point in the future), Blood Sword books are well-written, fun, and challenging.
There are many innovations that make it more memorable than other series. The most intriguing idea is that you can control a party of up to four characters, or play it with up to 3 other people. Each player controls one out of 4 available classes: Sage (a fighter/monk), Enchanter, Trickster, and Warrior. The characters are well-balanced, and you can finish the adventures without having all four classes (although it would be quite tough to do that without a Sage).
The combat system is very well designed: the closest to an RPG system I have seen. When you engage in battle, you are shown a diagram of the battlefield before each fight. You can carry characters from book to book, similar to the Lone Wolf series. They are also much longer than your average gamebook: each book contains 500+ passages spread over 300 pages of mostly very descriptive (and at times gruesome) text. If you are looking for a challenging, absorbing, and mature gamebook series, look no further than this out of print and extremely rare classic.
Our collection is the complete 5-book series, so download and enjoy. It took me close to 30 hours to scan all of these huge volumes, each of which goes for $30 or more on EBay whenever I see it, so your support in return would be greatly appreciated :)"
That's one thing I can be said to have done for mankind ;)
Hmm he implies that he paid for the books!
Someone remade King's Quest II