Dan had heard all the stories and reviews of people who had received a Chronivac. Mostly everybody used it to increase their muscles, or change gender, make their relatives and friends sexier, or any other variety of horny fantasy. Dan saw the appeal, but he always believed these users were thinking too small! Dan loved B-movies, scenes of giant lizards destroying stuff, horror flicks, creepypasta, sci-fi shooter games, and superheroes! He couldn't waste his Chronivac's awesome power on a simple wank fantasy!
Thinking too small... that's it!
He quickly loaded up his own 3D model and explored the species tab. The options before him were of common animals, wolves, cats, foxes, etc. He scrolled past all those to select Custom. Once there he entered another model viewer, one that let him change his body in any way he wanted. He dragged the height and weight tab all the way to the right, which put him at 8 ft, 600 lbs. He tried to drag it further and it gave him a warning:
"Chronivac is not responsible for any damages caused by excessive size increase. Do you wish to unlock sliders?"
Dan slammed that YES button and the sliders jumped from the right to the left. He continued sliding them right until they read 36 feet tall and a few 10,000s of pounds. To spice it up, he added some claws and horns, make him green all over, give himself one big cyclops eye, and a few extra body modifications. He kept the "Alter Reality" setting, set the duration to twelve hours (not long, in case he hated it) and set transformation time to Slow (One Hour) as it would give him time to leave his house safely. The Chronivac gave him another big warning screen.
"WARNING: Chronivac Global Settings are saved to your computer drive. If Chronivac or drive are destroyed, you may not be able to reload world from Global Settings and all current transformations will become irreversible. Proceed?"
What a warning! Dan made a mental note to leave his house alone while he was transformed. That would be worse than killing an important NPC and saving over it. He clicked YES, and then CHANGE.
Dan looked down at himself to see if it was working. Aside from looking a little more toned in the arms, he looked the same... Wait, now he was looking kinda buff... Now really thick and bulky! He felt his shirt become a little tight as a button popped off of it. Time to get out of here! He hurried downstairs, as his mom and dad were doing some spring cleaning, looking up at him with little interest. He asked, "I've got to take a walk for a while. Be back before supper. Need anything while I'm out?" His mom looked up at him and shook her head. "No, I've gone shopping. But maybe you need some Pepto. You're looking greenish." She looked him up and down. "And some new clothes that fit you better. Boy's growing like bamboo." Dan chuckled. "Yeah, I'll keep that in mind Mom. See you in a bit." Dan's mom hugged him and he exited the building.
Now Dan was out, and just in time, too, as his head became taller than the door frame. His toes felt painfully pinched, and a moment later his feet shredded through his old sneakers and socks, sporting a set of wickedly sharp nails. He felt the button and zipper in his pants break open leaving his underwear bulge. Where could he go in his condition? Downtown, he decided, past the old mill and following the bus route from there. He walked at a brisk pace, feeling his weak human clothing splitting open little by little. His muscle-fat chest and arms tore through his shirt at the stoplight... His massive feet destroyed his shoes and socks at the bus stop... He saw his friend Terry outside just as his fifteen-inch cock tore through his underwear and pants. Terry couldn't help but stare, transfixed. "Y-y-you really have to start wearing clothes, Dan, y-you'll have everybody in the city g-gawking at you..."
You pull the last of your pants off and toss them aside. "Where I'm going, I won't need clothes!" you quip.
Before you could move on, you clutch your eye in pain as they merge together, your hair all falls out and your face transforms, leaving one giant eye and a mouth with protruding bottom fangs. Terry chuckles nervously, "Heheh, what was I thinking? Monsters don't wear clothing at all. Well, uh... have a good time, I got somewhere else to be." And he runs off.
Moving on, Dan passes by the old mill and realizes he's staring at face-level to the second-story window. Not quite 36 feet yet, so he keeps going forward, feeling the pavement crack slightly under his body's weight. His forehead feels an awful pinch as something bursts through it... his new horn of course. Luckily it doesn't leave a wound. He turns the corner and follows the buses' route, knocking over signs, fences, almost getting tangled up in the electrical wires (that would really hurt by the way,) and feels himself bulking up and growing ever larger and larger. The final wave of transformation brings on a wave of endorphin and his 6-FOOT cock plumps up and rises to a full erection. The traffic slows to a crawl and some drivers get out of their cars to gawk and snap pictures. Dan is now at full size, and he's the biggest news in town right now! But what kind of monster is he?