In 'Nightmare Swap: Whose Dream is It Anyway?', players take on the role of a sleep therapist who accidentally inherits the powers of one of their patients, a lucid dreamer. Suddenly, they find themselves navigating a world where dreams and nightmares can be swapped, leading to bizarre landscapes and twisted realities. As players engage with the shared subconscious of various patients, they must solve psychological riddles, confront dark fears, and decide whose dream is worth saving. The choices affect both their waking life and the surreal manifestations of dreams, culminating in multiple endings based solely on the moral dilemmas faced within the dream realms.