Monstertentacles

robots and machines
aliens
dragons
tentacles
centaurs
giantesses
Stories
My Boyfriend Is A Tentacle Monster
A college co-ed's dorm room is invaded by a sentient tentacle portal that communicates through writing in a notebook. The two engage in rough, consensual sex with dirty talk, bondage, and tentacle penetration, with the portal filling all of her holes and impregnating her.
The Plumber, The Cable Guy, The Tentacle Monster, The Robot Pizza Boy, The Fire Nation, and The Robot Pizza Boy's Human Step Sister
A sexy MILF finds herself in the middle of an increasingly chaotic and bizarre orgy, starting with a plumber who turns out to be a cable guy with a vagina, and escalating to include a tentacle monster, a robotic pizza boy, the Fire Nation, Optimus Prime, El Luchador, catgirl twins, a flamingo mascot, and more. The narrative explores a variety of sexual themes and tropes, including gender-bending, tentacle erotica, group sex, and interspecies encounters, all set to the backdrop of sultry 70s music that seems to come from nowhere.
 Bae Runner 2069: The MILF Transplant
In the year 2069, a harried single mother named Elena, struggles to make ends meet and relate to her teenage son, Jommy, who is growing distant and independent. A tragic accident shatters their lives and changes everything, including the way they feel about each other.
Zara joins United Space Marines
Zara Veylon is forced into the military by a judge. She fucks her way into slightly better situations. These are vignettes of her exploits while in the United Space Marines.
Bound by the Willow's Desire
A young woman, Mia, willingly succumbs to the ancient magic of a willow tree in a serene forest, allowing its vines to bind her and explore her body. The vines stimulate her relentlessly, causing her to experience repeated orgasms and pushing her to the edge of sanity as her body craves more of the mind-blowing sensations. The vines tease and explore her body, entering her mouth and wet pussy, as Mia's body betrays her, and she becomes completely at the willow’s mercy.
In a public streaming studio, a man named Link is bound and pleasured by a tentacle machine, experiencing extreme, simultaneous multiple penetration and breeding fantasies, all while an audience watches from behind a one-way mirror. The machine, controlled by an adaptive erogenous protocol, uses hydraulic bondage and overclocked response actuators to manipulate and pleasure Link, who is denied orgasm until the very end.
Erinyes' Corrupted Desire
A demonic futanari, the Corrupted Erinyes, seeks vengeance in a sacred temple, only to encounter a sentient tentacle creature that matches her ferocity. Their encounter is a battle of wills and desire, as the Erinyes finds herself both challenged and aroused by the creature's relentless advances, leading to a raw and intense sexual encounter that pushes both their limits.
A young woman, Zulaika, discovers a mysterious parasite that enters her body and takes control. She is forced to satisfy its lustful desires, targeting female students and teachers, as it seeks to reproduce and spread.
A beautiful 25-year-old woman finds herself stranded naked on an abandoned island with no memory of how she got there. She survives and enjoys her solitude until a mysterious tentacle entity emerges from the ocean, seducing her with its otherworldly touch and filling her with its presence in multiple ways, including drinking her urine. The woman craves more, eventually begging the entity to breed her, leading to a profound and intimate connection that leaves her transformed and eager for more.
Components
Tentacle breeding fantasy background

Tentacle breeding fantasy

Knot-like swellings at the base of tentacles lock inside the character as viscous fluids flood their uterus or colon. The explicit focus on impregnation/insemination drives both shame and arousal.

Details

Plot Device

559

Tentacle aphrodisiac background

Tentacle aphrodisiac

Glowing fluids excreted by tentacles create burning hypersensitivity in every area they touch. The more the character struggles, the more their nerve endings ignite with needy desperation for stimulation.

Details

Plot Device

410

Tentacle egg-laying background

Tentacle egg-laying

Ovipositor-tipped tentacles deposit clusters of rubbery eggs deep inside the character's body. The stretch of each egg passing through their cervix/anal ring combines with the horror of feeling them stir within. Optional fertilization themes where eggs grow larger post-insertion.

Details

Plot Device

400

Tentacle milking background

Tentacle milking

Pulsing vacuum cups latch onto nipples or cockheads, rhythmically pulling out fluids while the character struggles. The humiliation of public lactation or spontaneous ejaculation drives the scene.

Details

Plot Device

390

Tentacle size transformation background

Tentacle size transformation

What starts as a manageable intrusion becomes an overwhelming stretch as tentacles inflate inside the character. The burning pain of expansion slowly transforms into desperate pleasure as their body adapts.

Details

Plot Device

310

Tentacle pheromone control background

Tentacle pheromone control

Glowing pollen from the tentacles' surface overrides the character's free will. They actively spread their legs and beg for penetration, their mind fogged with artificial lust that feels irresistibly real.

Details

Plot Device

307

Tentacle orgasm amplification background

Tentacle orgasm amplification

Each orgasm triggered by tentacle stimulation is magnified tenfold by biochemical secretions. The character experiences relentless, convulsive releases that leave them drained yet craving more.

Details

Plot Device

277

Overstimulation by multiple tentacles background

Overstimulation by multiple tentacles

The character becomes a writhing mess as clusters of tendrils pinch nipples, vibrate against their clit/glans, and pump their ass in alternating patterns. The sheer quantity of sensations pushes them toward repeated forced orgasms.

Details

Plot Device

270

Bound by tentacles background

Bound by tentacles

Tentacles wrap tightly around the character's limbs and torso, completely immobilizing them while other tendrils explore their body. The restraint creates both vulnerability and anticipation as erogenous zones are deliberately stimulated.

Details

Plot Device

263

Tentacle double penetration background

Tentacle double penetration

One thick tendril buries itself deep in the character's pussy/ass while another pushes into their mouth, throat, or second anal opening. The dual stretch creates overwhelming fullness and synchronizing thrusting rhythms.

Details

Plot Device

261