The Erotic Mind-Control Story Archive

Brainless! by GDMex

mc mf ff md

Thanks to a boardgame, Brian’s mother and sister are turned into his obedient brainless slaves.

Chapter 1

Brian sat on the living room floor, the box of “Brainless” perched in front of him. The box was peculiar, to say the least—vivid cartoon figures with spiraled eyes and wide, slack-jawed grins seemed to pop out of the cover, promising a peculiar kind of fun. Amy, his older sister, sat nearby, her blonde hair tangled in a ponytail as she sat with her comfortable shorts and loose blouse.

With their mother away for a week attending a medical congress, Brian suggested a game night to Amy. After discovering something special online and spending hours persuading her, they finally sat down to play

“So, what’s this about?” Amy asked while holding a bowl full of popcorn.

Brian shrugged, holding the game’s instructions. “The rules seem pretty straightforward.” He unfolded a sheet of paper and began reading aloud: “Welcome to Brainless!—the game where the smartest brain wins! The objective is to collect as many brain tokens as possible by answering questions. The player who answers the most questions earns a special power.”

While Amy stood silently, Brian continued, “Up to six players, draw cards, answer questions, move your pieces. Blah, blah, blah...”

“Questions, huh? Alright, let’s see what you’ve got,” she said.

Brian opened the box, and they both leaned down on the floor as he pulled out the game board, dice, and a deck of brightly colored cards. The board was long and filled with squares to advance through, but curiously, it had no end. The path formed a continuous loop, similar to Monopoly, but without a clear objective. At the center, a box for the cards stood out in bright pink.

“What’s this?” Amy asked, pointing to a closed capsule beside the card box.

“Dunno,” Brian replied, flipping through the instructions for a clue.

“Well,” Amy said with a smirk, “let’s play and see if we can figure out how to open it.”

They started the game, moving their pieces around the board and drawing cards. Like any other trivia game, this one featured a variety of questions about general knowledge, science, art, and more. For each correctly answered question, the player earned points—or tokens—to advance a few spaces. Brian, a ionate Jeopardy enthusiast, had no trouble breezing through the questions, consistently outscoring his sister. Amy could only watch in frustration as her brother claimed all the points with ease.

After a while, Brian confidently answered another question and moved his piece to a specific square. Suddenly, the game emitted a soft click.

“What was that?” Amy asked, curiosity sparking in her eyes.

“Something must have broken,” Brian said, his tone heavy with disappointment. The game had cost him a fortune, and the thought that it might be defective filled him with frustration.

“Or maybe not,” Amy said, her gaze shifting to the capsule at the center of the board. It was now partially open, revealing something bright inside.

Brian leaned in and carefully opened the capsule, pulling out a golden card. “Whoa, this looks different,” he said, holding it up for Amy to see. “It says, ‘Mind Control Card: You have the chance to control the minds of the other participants with these words...’”

Amy snorted, crossing her arms. “Seriously? What words?”

Brian laughed and began to read aloud. “Brainless and tame, under my control. Obey my command, and surrender your soul.”

The moment the words left his lips, the room fell completely silent. Amy’s amused expression faded, replaced by a blank stare. Her eyes lost focus, and her face became unnervingly void of emotion.

“Well,” Brian said, setting the card down on the floor and grabbing the dice. “I hope you’re ready to lose the next question.” He held the dice out to her, waiting for her to take them. “Your turn.”

Amy didn’t move. She stood frozen, her mouth slightly open, staring at him with vacant eyes.

“Your turn,” Brian repeated, glancing at the board to assess his progress. He still didn’t quite understand the game’s dynamics—how could you win if the board was an endless loop? And now, with this “special power,” did that automatically make him the winner? Or was there some hidden objective? He was deep in thought when Amy’s continued silence made him look up again.

“Amy?” he asked, his tone tinged with nervous laughter. “Are you okay?”

She didn’t respond. She just stood there, unblinking and unmoving. Brian’s heart began to race. “Come on, Amy, quit messing around,” he said, waving a hand in front of her face. Nothing. Not even a blink.

This had to be a joke. It had to be. But as the seconds stretched on, doubt crept in. Either she was pulling an elaborate prank, or something had gone horribly wrong. Testing his first theory, Brian approached her cautiously. If she was faking, he’d force her out of it.

He pinched her shoulder, hard, bracing himself for the slap he was sure would follow. He even closed his eyes, expecting her outburst. But nothing happened.

“What the hell?!” he shouted, his voice echoing in the quiet room.

Frantic now, Brian grabbed the game’s instruction sheet and scanned it for any mention of the Mind Control Card or how to undo its effects. His chest tightened as he realized there was nothing—no instructions, no hints, no way out.

“Amy? Snap out of it!” he yelled, gripping her by the shoulders and shaking her. Her head lolled slightly with the motion, but her expression remained blank.

Brian’s panic deepened as he stared at his unresponsive sister. What had he done? The game, the card—could it actually be real? He’d never believed in such things. When he bought the game, he’d read all kinds of comments claiming it offered a “mind-controlling experience,” but he’d dismissed them as marketing fluff. He’d only wanted a fun trivia challenge, something to the time. Yet now, the evidence was undeniable, standing in front of him—staring blankly with vacant eyes.

“Brainless and tame, under my control. Obey my command, and surrender your soul,” he repeated, as if hoping the words would undo whatever had happened. But nothing changed.

His hands trembled as he clutched the card. This was supposed to be a harmless game night, a bit of fun to escape the monotony of the week. Instead, it had spiraled into something dark, something that felt completely beyond his control.

Brian sank onto the floor, staring at the golden card. He had to figure out a way to reverse this, and quickly. But as his gaze drifted back to Amy, the possibility crept into his mind: What if she’s faking? Maybe she was just messing with him, getting revenge for losing so badly in the trivia game. It would be so like her to turn the tables with a prank like this.

If she was acting, he thought bitterly, she was going to pay for scaring him like this. Threefold.

“Amy?” he called again, his voice shaky but edged with suspicion. “Can you hear me?”

Her lips moved, and she spoke in a low, monotone voice. “I listen and obey the smartest brain.”

A cold shiver ran down Brian’s spine. The words were hollow and unnatural, devoid of any of Amy’s usual sarcasm or wit. This couldn’t be real. It had to be a dream, a prank—anything but what it seemed.

“What nonsense are you talking about?” he asked, his voice cracking as he tried to sound incredulous.

“I listen and obey... the smartest brain,” she repeated, her tone unchanged.

Brian let out a nervous laugh, though it sounded forced even to his own ears. “Ridiculous,” he muttered. “Listen and obey? Smartest brain? Yeah, right.” This was Amy, the one who always mocked him for being too serious. She’d never up an opportunity to get under his skin. If she wanted to play this game, fine—he’d play along.

“Alright, let’s do things your way,” he said, his voice laced with false bravado. He leaned closer, testing her. “Why don’t you... um... undress?”

The words hung in the air, the room growing impossibly still. For a moment, he almost expected her to snap out of it, to roll her eyes and call him a creep for even suggesting such a thing. But instead, Amy’s hands moved.

He looked at her with a nervous smile, fully expecting Amy to scoff at his suggestion. But when she stood up and began lifting her blouse with a mechanical precision, Brian froze. With the blouse halfway up, he held his breath, convinced she’d stop, laugh, and mock him for even thinking she’d go through with it. But instead, she pulled it over her head in one smooth motion and let it drop to the floor.

Brian’s jaw dropped as he took in the sight of Amy in a snug white bra.

She wasn’t usually one to dress revealingly at home; her wardrobe mostly consisted of loose shirts and comfortable shorts. The rare exceptions were at the beach, where she wore the most striking bikinis, effortlessly turning heads whenever she wanted. But this—seeing her in nothing but a bra—was something entirely different, and deeply unnerving.

His heart raced, and a wave of heat surged through him, leaving him flustered and confused. Feeling a sudden, unwelcome reaction in his pants, he quickly turned away, his face burning with embarrassment.

“Dammit, Amy!” he blurted out, his erection burning him. “You’ve gone too far! Cut this nonsense out!”

Brian’s discomfort turned to alarm as her hands moved to the waistband of her shorts. She lowered them slowly, the fabric sliding down her legs until they ed the blouse on the floor. She stood now in just her underwear, her posture stiff and unyielding, her expression vacant.

“Amy!” Brian shouted, spinning back to face her. His voice cracked with shock and panic. “What the hell are you doing?! This isn’t funny!”

Amy’s head tilted slightly, her blank gaze fixed on him. “I listen and obey... the smartest brain...” she repeated, her voice flat and devoid of inflection. “If the smartest brain wants me to remove my clothing, I will comply.”

Her words made Brian feel nauseous. “This isn’t serious... is it?” he stammered, searching her face for any sign of the sister he knew.

Amy blinked once, slowly, as though processing his question. Then, in the same monotone, she replied, “I do as commanded. The smartest brain gives orders, and I obey.”

Her tone was cold and lifeless, each word hitting Brian like a stone. This wasn’t Amy—not really. Whatever had happened when he read that card had taken over completely. He had to stop this, but his mind was racing too fast to think clearly.

“You gotta be kidding me,” he nervously laughed, watching her hands travel to her back and unclasp her bra. As it slipped to the floor, revealing her juicy tits for the first time, he felt his knees weaken, almost making him faint. She wasn’t joking—this was real. Stumbling backward, he collided with the wall. “This can’t be true.”

He had control over her, but it wasn’t right. This wasn’t Amy; she was like a puppet, her strings pulled by the words he had spoken. The implications were horrifying. He had to fix this, to bring her back before their mom returned from her reunion.

“Amy,” he called out, his voice trembling as he saw her hands drift to the waistband of her panties. “Stop. How do I undo this?”

“Undo what?” she asked, pausing as her head tilted slightly, her voice unnervingly casual.

“Whatever happened to you!” Brian yelled, his anxiety bubbling over. “Just look at you! You’re stripping in front of me! That’s not something you’d ever do!”

“Nothing happened to me,” she replied with an unsettlingly wide smile, her succulent tits hanging freely in the air. “I’m just obeying the smartest brain.”

“Oh, come on!” Brian shouted, his frustration and fear mounting.

There had to be a way to get her back. His eyes darted to the game box. Maybe the instructions held a clue—something he’d missed. He lunged for it, rifling through the contents with desperate urgency. Nothing. No mention of how to reverse the mind control, no guidance, no solutions.

His thoughts raced back to the strange website where he’d purchased the game. Maybe there was something there, some detail he’d overlooked or a who could help. But that would take time, and he couldn’t leave Amy like this—not in this state.

He looked at Amy again, his heart aching. “Just... just stay here,” he said, feeling helpless.

“As you command, smartest brain.”

“Stop calling me that, for god’s sake!” he snapped, his voice cracking.

Brian ran up to his room, feeling tears prick at the corners of his eyes. He was just a kid; he didn’t know how to handle this. He needed help, but who could he tell? Who would even believe him?

In his room, he collapsed onto his bed, overwhelmed by the weight of the situation. A dark thought crept into his mind: if he really had this power, what could he do with it? The idea repulsed him, but he couldn’t ignore the flicker of curiosity buried beneath his panic. He clenched his fists and shook his head. No, he couldn’t think like that. He had to fix this, not exploit it.

Taking a deep breath, Brian tried to steady himself. He needed help. His hands trembled as he reached for his phone and scrolled through his s. He stopped at Jake, his best friend. If anyone could help him, it was Jake. Heart pounding, he pressed the call button.

“Yo, Brian, what’s up?” Jake’s voice crackled through the line, cheerful and carefree.

Brian swallowed hard. “Jake, something really weird just happened.”

“What do you mean? You sound freaked out.”

“I bought this game online—it’s called Brainless!. I know it sounds dumb, but I was playing it with Amy, and... there was this card that said I could control the minds of the other players with some words.”

Jake laughed. “Seriously? That sounds like a load of crap.”

“No, Jake, listen to me!” Brian’s voice rose, filled with desperation. “I said the words, and now Amy is... she’s like a zombie or something! I don’t know what to do, dude.”

There was a pause on the other end of the line. “Wait. Are you serious right now?”

“Yes! I—” Brian stopped mid-sentence, panic surging through him. He couldn’t tell Jake that he had gotten her half-naked. This was his sister, and even thinking about it made him feel sick.

“What?” Jake pressed, his voice sharper now. “What happened?”

“I had to test her, man. I thought it was a joke, so I told her to do something she’d never agree to... and... and...”

“And what?” Jake asked, his tone heavy with suspense, making Brian’s heart race faster.

“I told her to get naked,” Brian blurted out, his voice shaky. “And... she actually took off her bra. Right in front of me!”

“Do you think I’m going to believe you?” Jake scoffed. “Seriously, dude, stop watching movies.”

Of course, Jake wasn’t going to believe him—no one would. The idea of Amy, the hottest and most popular girl in school, stripping for her brother? It was absurd, nonsensical in every way imaginable.

But Brian had a trump card: he could prove it.

“I’ll show you,” Brian said confidently, though his hands were trembling. He headed downstairs, his heart pounding with each step. As he reached the living room, his stomach twisted. Amy was still there, exactly as he had left her. She stood motionless, smiling blankly. Swallowing hard, he raised his phone, his fingers unsteady as he framed the shot. He snapped the picture, capturing her pose and expression, and quickly sent it to Jake. “See that,” he texted.

After a few seconds, Jake called. “Oh shit! Where did you get that picture of her?!”

“I already told you, man! She’s in my living room. I took that photo just now—look at her face.”

“Either she’s a secret exhibitionist, or... you’re actually telling the truth.”

“Please, Jake,” Brian begged, his voice trembling with desperation. “I don’t know what to do. My mom’s out, and Amy is... well, just look at her!”

Jake fell silent, undoubtedly processing the bizarre image on his phone screen. The pause stretched uncomfortably, leaving Brian alone with his spiraling thoughts. He glanced back at Amy, still frozen, still smiling. He couldn’t shake the sinking feeling in his chest. He had to find a solution—and fast. If he didn’t, the consequences would be catastrophic.