"Harlequin's Nightmare" is an action/exploration 2D Platformer, that seeks to emulate classic 2D games. The game tells the story of a kingdom whose King is at risk of being overthrown by an ancient warrior who was loyal to him in the past, but due to his thirst for power was exiled and cursed, and has sworn to take revenge after his exile. The King has put the Kingdom's defense in the hands of the Order of the Green Harlequins, who have faithfully served the Kingdom for centuries.