Way of the Tiger was a series of six books by Mark Smith and Jamie Thomson. You play a ninja on a quest for revenge, and your quest spans all six books with a real character progression.
When you win a book, you keep the character including injuries and achievements and history, and move on to the next book. Some of the decisions make a difference in the following books.
There were six books in the original series, 1985 through 1987. In 2013 a prequel book Ninja! was released, and in 2015 the seventh book Redeemer was published.