The tag is Daydreams and Nightmares, and the genres are anything Fantasy and Horror. (Books do not have to feature both genre types, or they may. It's a spectrum thing.) The dates for the promo are March 8 to March 10 of 2019.
Every monster started as somebody's fantasy. Every fantastic beast is a monster to somebody. Were Dr. Moreau and his chimeras not a fantasy tale? Was Gulliver's journey not horrifying for him at times?
To join this promo, your book must be a, novel, a novella, a collection of flash fiction or short stories at least three stories in length, or an anthology for which you are listed as curator or editor; and must be 99¢ March 8 - 10 of 2019. It may also be a box set for which you are listed as author or author team, editor, or curator; and may cost up to $1.99 on the dates of the promo. By submitting a title, you agree to use your social media accounts and email list to promote the program. The book must be available on Amazon.com, but can also be available on other eBook platforms. This form closes at midnight February 25th, 2019 US Eastern time.
The form can be found here:
http://bit.ly/DandN2019