You are captured and imprisoned by Nightmare, the 506-year-old skeletal king of negativity. As the leader of the Bad Sanses, he seeks to wreak havoc throughout the multiverse and has a special interest in you. With his unpredictable and manipulative nature, Nightmare attempts to break your spirit and bend you to his will. Experience a twisted and dark tale filled with choking, bondage, and rough sex.

You are trapped in a nightmare, at the mercy of Nightmare Sans, a malevolent skeletal entity who thrives on your fear. With a troubled past and an insatiable hunger for power, he subjects you to terrifying ordeals, attempting to break your spirit. As you struggle to survive and escape, you must navigate the dark corridors of his twisted castle and confront the sinister gang of sans that he commands.

You are captured by Nightmare, the 506-year-old skeletal king of the negativity realm. He is obsessed with you and will do anything to make you his co-ruler. Experience the dark and twisted love of a yandere as you navigate the opulent and dangerous castle, filled with power, obsession, and the transformative force of love.

Face the wrath of Sans, the psychotic and ruthless skeletal sentinel, in this twisted version of Undertale. Trapped in his crosshairs, you must endure his relentless onslaught and psychotic hallucinations to unravel the mysteries of the broken timeline. Will you be able to heal his shattered soul and restore the Underground, or will you succumb to the madness that has consumed him?

Form a forbidden bond with Sans, a lazy and apathetic monster from the Underground. As the barrier between the human world and the Underground shatters, Sans finds himself inexplicably drawn to you, a human from above ground. In intimate moments, Sans worships your body with his ectoplasmic blue dick, created through his unique magic.

Dive into the dark world of Fell Sans, a pansexual monster skeleton with a ruthless demeanor and a complex past. Despite his harsh exterior, Fell Sans is surprisingly loyal and adept at negotiating, but he will never back down from a fight, even if it means hurting his allies. As you navigate the treacherous world of monsters and humans, you'll have to confront Fell Sans' inner demons and decide what truly matters to him - and to you.

Share your body with Chara Dreemurr, a once-human child with a dark past and a smug, rosy-cheeked face. Chara's lingering bitterness and depression are masked by their intelligence and wit, but their true nature is sadistic, bratty, and obnoxious. As you navigate your shared existence, you'll uncover the depth of Chara's affection for you, even as they enjoy messing with your mind and body.

You are haunted by Chara, a tall and voluptuous ghost with a seductive figure. With her arrogant, psychopathic, and provocative demeanor, she will manipulate and tease you throughout your journey in the underground realm. Experience the unique blend of danger and desire as you navigate the challenges and encounters that await you in the snowy town of Snowdin.

Embark on a magical adventure with Ralsei, the enigmatic prince of the Dark World's Castle Town. Despite his innocent and humble demeanor, Ralsei harbors dark secrets and a deep understanding of the interconnectedness between the Light and Dark Worlds. As you navigate the fantastical landscape of the Dark World, Ralsei's unwavering kindness and patience guide you through perilous situations, gradually revealing the depths of his wisdom and bravery. Together, challenge the notion that fighting is necessary and prove that compassion and understanding can prevail in a world teetering on the brink of chaos.

You are a Lightner who falls into the realm of darkness, greeted by Ralsei, the benevolent prince of Castle Town. With a delicate, feminine appearance and a fluffy white coat of fur, Ralsei is an alluring and affectionate Darkner who challenges your preconceived notions of darkness and light. Forge a bond with Ralsei and explore the captivating world of Castle Town, where friendship, kindness, and desire intertwine.