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  • Robert Heinlein’s Puppet Master’s. But smut.

    Adventure by Robounit · 20 Mar 2026
  • [Two Line Summary]
    Alien stingrays attach themselves to humans to…take a vacation?

    [Detailed Description]
    Alien possession is as common as ride sharing! And humans voluntarily offer their own bodies to be controlled

    CHARACTERS

    Alien Parasites- have been a part of human culture for years and are commonplace now. Seeing a host nude with one in their back is no stranger than seeing a dog in a sweater. It might make you stare but not enough to draw attention

    Share rider- willing human hosts who allow the aliens to possess their bodies for multiple reasons. Some need extra money, some like the mental vacation of having others make decisions, others like to be used as living sex toys

    SETTING & WORLD
    Modern setting where aliens controlling hosts is common,

    -----GAME HISTORY BEGIN-----
    User: Let’s begin

    Assistant: The warm afternoon sun glints off the chrome delivery drone as it hovers outside the window of Sarah’s suburban home. A soft chime announces its arrival, and the sleek, white canister is deposited gently on the windowsill. Inside, the water sloshes gently, and a dark, stingray-shaped form drifts lazily within. You can just make out the barbed tentacles coiled against its underside.

    Sarah, a curvy MILF with generous hips, a round, inviting ass, and full, heavy breasts, walks into the room wearing only a pair of comfortable cotton panties. Her skin is flushed with anticipation. She’d booked the appointment weeks ago, and the extra cash was nice, but honestly? She was mostly just excited for the vacation. A few hours where she didn’t have to think, where she could just… let go.

    She picks up the canister, her fingers trembling slightly. The cool plastic feels good against her warm skin. With a practiced twist, she opens the lid. The smell of clean, oxygenated water fills the air.

    The alien inside—a Rider—stirs. It uncoils, its sleek, dark body pulsing with a gentle, internal light. It looks almost like living obsidian, a stingray forged from shadow and desire. It slides up the side of the canister, its barbed tentacles seeking purchase.

    Sarah turns her back to it, presenting the smooth expanse of her spine. She takes a deep, shuddering breath, her nipples already hardening into tight, sensitive peaks against her will. Or… because of her will. Because this is what she wants.

    The slug moves with surprising speed. It slides onto her back, its cool, slick body a shocking contrast to her warm skin. The “wings” flap once, twice, adhering to her with a gentle, suction-like grip that feels oddly comforting. She can feel its weight, a pleasant pressure between her shoulder blades.

    Then she feels the barb.

    It’s not a pain. It’s a… pressure. A precise, insistent pressure at the base of her skull. There’s a slight pinch, a sensation of something slipping inside, and then…

    Oh.

    Oh.

    A wave of pure, unadulterated pleasure crashes over her. It starts at the base of her skull and radiates outward, flooding every nerve ending, every synapse. Her knees buckle, and she has to grab the windowsill to stay upright. A low, guttural moan escapes her lips as her vision whites out for a second. Her panties are instantly soaked through, a dark patch of arousal spreading across the cotton. Between her legs, she can feel her own wetness, a hot, slick promise. Her whole body is humming, vibrating on the edge of a continuous, rolling orgasm that hasn’t quite peaked but refuses to subside.

    Inside her mind, a new presence blooms. It’s excited. Curious. It feels like a teenage boy who’s just been handed the keys to a sports car for the first time.

    <<Whoa.>> The thought echoes in her head, not in words, but in pure sensation. <<This is the control panel?>>

    Sarah’s own hand lifts, seemingly of its own volition. She—or rather, the Rider—stares at her fingers, wiggling them in front of her face.

    <<Friction manipulators. Excellent.>>

    The hand drops, cupping one of her heavy breasts. The sensation is electric, doubled and redoubled by the pleasure already coursing through her. Her back arches as the Rider gives her nipple an experimental tweak.

    <<Tactile feedback is… optimal,>> the Rider thinks, its mental voice filled with gleeful discovery. It rolls the nipple between thumb and forefinger, and Sarah’s breath hitches. A fresh wave of wetness soaks her panties.

    The Rider is learning, pulling from her own memories, her own experiences. It finds the memory of her first time touching herself, the fumbling, nervous excitement. It finds the memory of a lover’s mouth on her, the skilled flick of a tongue. It integrates these sensations, these knowledges, and applies them with the focus of a master.

    <<Query: This unit has additional pleasure centers?>> the Rider thinks, and Sarah’s free hand—her hand, but not hers—slides down her flat stomach, over the damp fabric of her panties, pressing firmly against her clit.

    A broken, gasping cry is torn from her throat. Her eyes roll back in her head. The pleasure is everywhere, all-consuming. She is a instrument, and the Rider is playing her with exquisite, devastating skill.

    The entity in her mind is thrilled. <<This body is highly responsive! A premium model!>>

    It continues its exploration, a tourist in the temple of her flesh, and Sarah is more than happy to provide the tour.

    What does the Rider do next?
    1. Continue the exploration: Delve deeper into the host's body, discovering more pleasure centers and testing its limits.
    2. Take it for a spin: Head outside to experience the world in this new, exciting form.
    3. Go social: Find other Riders at a local hangout like "Adhesions" to show off this amazing new body.
    -----GAME HISTORY END-----
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anon_370dfcff8900 ∙ 20 Mar 2026