The Orphan's Code is an epic fantasy trilogy for ages 14 and up. It follows a diverse cast (autistic, POC, LGBT) of orphans on their quest to survive a ruthless king. It is pitched as "Assassin's Creed meets Mistborn meets feminist Game of Thrones" and also has an accompanying video game script.
The Orphan's Code was self-published in 2018 on Amazon, to modest success: it sold over 100 copies in its first month, and about 200 more over the following two years. I mean, considering the author was a nobody...not bad.
It developed a tiny cult following on Instagram which is currently off minding its own business while the author finishes book 3 (and possibly book 4).