SFF Book Bonanza – Kindle Unlimited for April 2021 P. H. Solomon 2 years ago Click here or on the graphic to view the list of fantasy science fiction books. Share this:Know someone who would love this? Let them know: RelatedSFF Book Bonanza: Kindle Unlimited – Feb 2023SFF Book Bonanza Jan. 2019 Kindle Unlimited BooksMarch 2019 SFF Book Bonanza Kindle UnlimitedSee also February Science Fiction & Fantasy 99c Sale