X-links to the DRM-free megathread where
there's 2 recent items of SFnal interest:
The Women in Science Fiction Bundle offered by StoryBundle contains quite a number of well-established authors including backlist novels from Nebula winners Nancy Kress, Vonda N. McIntyre, and Linda Nagata, as well as popular Baen and ROC authors like Catherine Asaro, Jody Lynn Nye, and Judith Tarr, and more.
There's 5 full-length novel or story collection items at the $5 minimum, 5 more at the $15 top-tier (unlike Humble Bundle, there's no obvious way to top up your purchase, so please be sure of what tier you want before buying).
There's also a freebie mp3 song if you subscribe to the newsletter.
This is an auto-buy for me, as it contains works by some of my very favourite authors (be warned that the Nancy Kress book is the 1st in a duology originally published by Tor).
Also, for fans of the Warhammer RPG franchise, there's the
Humble Games Workshop Mobile Bundle with the Android game adaptations of the series, and StoryBundle's
The Literary Fantasy Bundle is expiring in the next few days.