Geometry Dash The Nightmare is a darker version of the Geometry Dash series. It is, in fact, a living nightmare for players with little competence. Altering your movement style on the fly will get you into trouble, to say nothing of the many obstacles that have been strategically placed along the path and will prevent you from reaching the end goal. You may be guaranteed that it will not appear like any other geometric dash that you have seen in the past. If you have any reservations, jump right in and really experience it in motion.