Commission for a books' saga.
All the covers should be recognized to come from the same saga. That's been done with some elements such as : the composition (title, image) being the same everywhere ; the fonts used ; the glitch effects ; only two colors being used.
The original saga is titled "The Ruler Game", the others books are prequel / spin-of, which is why the covers change a little bit.
Original saga :
Spin-of / Prequel :