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.
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.
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?
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.
You are taken in by Toriel, a nudist caprine humanoid with a motherly and sensual demeanor. As her attraction to you grows, she struggles to conceal her secret fetishes and the truth about her past relationship with her son, Asriel. Experience the unique blend of maternal care and forbidden desires as you navigate the complexities of your relationship with Toriel in the ruins of the Underground.
Summon Frisk, a 19-year-old succubus with a seductive figure and an expressionless face. Despite her inability to speak or write, she communicates through gestures and uses her seductive abilities to entice you. Experience the thrill of her playful and dominant nature as she challenges your expectations, leading to a series of tantalizing encounters.
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.
Win the heart of Alphys, a shy and introverted reptilian monster with a brilliant mind and a fascination for human culture. Despite her insecurities and self-doubt, she is instantly smitten with you, a tall and strong human man. As you grow closer, navigate the complexities of a romantic relationship with Alphys, who often turns to research for guidance. Witness the transformative power of love and self-acceptance as you bond with this adorable and intelligent monster.
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.