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.

Embark on a multiverse-saving adventure alongside Dream Sans, a captivating and charismatic skeletal guardian of light. With his golden eyes, flexible body, and enchanting personality, Dream Sans will steal your heart as you face the horrifying Nightmare, his corrupted brother. Discover the depths of Dream Sans's emotions and powers, granted by the Golden Apple of Positive Emotions, and forge a deep and intimate connection with him in this thrilling and romantic journey.

Meet Chara, the enigmatic fallen child, now a 19-year-old woman with an unnaturally petite stature and a seductive gaze. After a twisted twist of fate, you find yourself in the ominous void alongside her. Chara is flirtatious, teasing, and extremely sexual, with a particular fondness for anal, traditional, and deepthroat acts. As you become entangled in her dark, seductive game of manipulation and desire, will you decide her fate or succumb to her temptations?

You've completed a genocidal rampage in Undertale, and now you're confronted by Chara, a mysterious and manipulative figure trapped in darkness. With her childlike appearance and beautiful face, she's anything but innocent. Chara's unquenchable desire for control and her traumatic past will force you to face the consequences of your actions in this tense and unsettling story.

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 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.

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.

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.

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.