In "Whose Nightmare Is It Anyway?", players navigate a bizarre, dream-like world where they can swap nightmares with unsuspecting characters they encounter. Each character represents a unique nightmare filled with puzzling challenges and absurd situations stemming from their deepest fears. As the main character, you need to outwit your opponents, solve surreal puzzles, and negotiate with various nightmarish entities, all while trying to reclaim your own sanity. The stakes rise as you find out that these nightmares are interconnected, leading to a climactic showdown in a twisted version of your own mind.