Here are 17 books, I think, have unusual twists and/or concepts. I’ve read them all, but please note they are in no particular order. Hope you find something you enjoy!
1) Partials by Dan Wells (part of a trilogy)
A Young Adult, Science fiction, Dystopian, Fantasy. I’ve suggested an age range for this book of 15+. Partials is unusual in my opinion because it is about engineered, organic beings called ‘Partials’, who were made by and are identical to, humans. Ok so this has been done before, but Dan Wells has an awesome writing style and has added a couple of extra twists. War has devastated the planet, and Partials and humans are sworn enemies. It has a sort of ‘I, Robot’ feel to it, but what really makes this novel different is the fact that both the humans and the Partials are slowly dying. The two enemies will have to set aside their past wrongs and differences in order to survive.