For this list, I’ve stuck to the classic definition of sci-fi, especially in terms of “relating to science” and being “futuristic.” If you like books with plenty of action and adventure on the background of solid science, you’ll love these middle grade science fiction books.
Last Gate of the Emperor is a middle grade Afro-futuristic sci-fi novel co-written by Kwame Mbalia and Prince Joel Makonnen. Yared Heywat lives in Addis Prime, a rundown reimagined Ethiopian city. Although Addis Prime is light years ahead of our current tech scene, it still has remarkable technology, from holovids (which allow holograms of kids to attend classes, instead of the actual kids) to sky sailing transportation. However, several unreasonable rules seem to stifle more than they protect the people. Plus, no one ever believes the stories Yared tells about a long-lost city in the sky named Axum — stories his uncle Moti shared with him.