1,589 Books
See allI can't in good conscience give this anything higher. Being excruciatingly tedious was its first sin, but that could have been graciously ignored for the fact that after, y'know, 20+ books, not every installment can be a winner. But the epilogue was awe-inspiringly bad, like... guys? Guys, are you writing satirical fanfiction of your own books? Guys?