Danganronpa: The Gates of Mars (my version)

16 Ultimate Students wake up far from the comforts of home, and even Earth itself. Stuck on the red surface of the Planet named after the Roman God of War, soon a mysterious monochrome lady and her “kids”, a gang of multi-colored delinquents, appear and drag them into a war between one another in a brutal Killing Game, where trust and admiration are tested in the cruelest ways possible.

(Based off on the Gates of Mars.)