Platform(s): 100% sure it was for the NES
Genre: Adventure/Puzzle, same type of game as Fire and Ice or Adventures of Lolo, but it was neither of these nor a sequel to these.
Estimated year of release: Late 80s/Early 90s
Graphics/art style: Medieval styled (tower/castle you had to climb, knights/heros/princesses) The game's style itself wasn't dark (as in thematically), but most of the color schemes used that I remember were dark colors
Notable characters: I remember the protagonists (one if single player, two if two player, they looked like recolors of each other) were two young male heroes/knights tasked with saving two princesses from an evil beast final boss at