Tanya took a moment to process this new information, then knew what she had to do. As inconspicuously as she could, she grabbed a towel, wiped down the treadmill's handrails, and walked off to the gym's locker room.
The gears in Tanya's head spun as her plan solidified. This was a marathon, not a sprint. She would only get one chance to gain points every five minutes, and somebody changing into a blonde Barbie doll would attract attention. She needed privacy.
Tanya stepped into the locker room and saw a middle-aged woman in yoga pants rummaging through her locker, muttering to herself. The sound of the showers drowned out most of what she was saying.
Good, thought Tanya. She raised the gun and fired a beam straight into the center of her target's back.
"What the fuck?" snapped the woman, whirling on Tanya. "What did you--ooh!"
Streaks of bleach blonde sprouted from the roots of the woman's dark hair, running down her locks as they grew more voluminous. Her eyes went blank and she pursed her plumping, pinkening lips as she moaned softly. Tanya stared at her victim's face, distracted by the changes. The woman's lips had grown to the thickness of her thumb, and shone with an artificial-looking gloss.
"Oooh, Tammy like," she giggled as she idly sucked on a now-manicured finger.
Tanya's eyes wandered downwards. Her target's --Tammy's -- breasts had become firm and globular. They had swollen to the size of medicine balls, dragging up the hem of her shirt, revealing a flat, waspish waist. Tammy moaned again in what could only be pleasure as her hips widened and ass thickened, stretching the fabric of her yoga pants into translucence. She ran a hand along her basketball-sized bubble butt and gave it a slap, giggling.
In instants, Tammy's transformation was complete. The middle-aged gym-goer looked more like a doll than her former self. She giggled and clapped her hands, her silicone-filled breasts shaking lightly as she did so.
"Oh yay! Like, thank you so much! Tammy feels--" she trailed off as she sneaked a hand in between her legs. "--Tammy feels so good!" She hooded her eyes in an attempt at sultriness. "Is there anything I can do to make it up to you?"
"Go hide in a shower and masturbate for the next two hourss," said Tanya.
Tammy did as she was told. She strode off towards the showers, the sway of her thick ass beginning to rip her pants. Tanya sighed and glanced at the ray gun. A message telling her that she had earned 1 experience point and needed another 9 experience points to level up was flashing on the screen. She nodded and steeled her nerves.
The next nine victims fell without difficulty. The first unchanged woman in the showers scarcely noticed Tanya firing a beam of transmogrifying light under the shower curtain, and was too busy playing with the massaging shower head afterwards to give Tanya any more grief. Giggles and moans began to fill the shower stalls. Tanya turned on a couple more showers onto full blast, letting the noise hide the pleasured voices of her former prey. She hid in a corner and waited, transforming people who entered the locker room alone and stowing the brain-drained husks of their former selves in shower stalls.Soon the locker room was filled with giggling, curvy airheads, and a new alert emerged on her gun's screen.
"Congratulations! You leveled up! Please pick an upgrade."