Ruler of the dinosaurs

Story by saaru on SoFurry

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Free story request for lowe_gear

It's a story about Alex, a guy that wants to leave an impression to his friends at a masked party. For that, he bought a silly tyranno mask, but as soon as he tries it on, surprise! It talks to him, and promises him all sort of great stuff. Alex accepts, and a few minutes later, the mask merges with him and transforms him into a sexy stud of a tyrannosaurus rex. He has some fun with his new enhanced package, falls asleep, and then wakes up in a world he doesn't know. But he wants to conquer it, through... sex.

Contains the usual hyper growth size difference cumflation stuff. But this time, there's also an all the way through.


Alex was heating some water in a kettle to prepare his lunch: another instant noodle soup. He was watching the kettle heating the water absentmindedly when the bell to his apartment rang. Alex dragged his feet toward the door, he opened it after he saw the mailman through the peephole. The post employee gave him the usual mail plus a package for which he had to sign an acknowledgement of receipt. He thanked the man and then closed the door while looking at the strange package, wondering what it was. He had a bad habit of ordering a lot of stuff online despite being completely broke. He saw the brand of the manufacturer on the package and remembered, it was the tyrannosaurus rex mask he bought for an incoming masked party at the school next Sunday. He wasn't really interested in the party, but there would be a buffet there, which means that he'd get to eat something else than the same instant noodle soup he ate daily. He also wanted to go to this party and wear a silly mask like the one he was holding in his hands to really leave a lasting impression on others, because it was for him the only way to stand out as he was short and chubby. More interested in that kid's toy rather than the usual mail which was most likely bills, he ripped the package open, which revealed indeed the mask he bought. It looked so silly that he let out a giggle; it was a simple yet very detailed mask that you had to strap to the back of your head, had holes for his eyes and the jaw was movable. It was made of a material that simulated the king of dinosaurs' skin: a scaly texture coloured brown on top and beige on the underside of the jaw. The kettle started whistling, so he shut it off and poured the boiling water inside the plastic cup of his instant noodle soup. He unpackaged the mask and took a closer look at it: it was definitely a toy for kids, but at least it would be very fun to wander around while pretending to be a dinosaur. There was still a couple minutes until the noodles were cooked, so, with the mask in one hand, he headed to the bathroom to look at himself in the mirror. He unlocked his phone to prepare the camera app, put it on the sink, then took the straps of the mask to secure it over his face.

As soon as the strap was locked behind his head, Alex felt a bit dizzy. He took his phone in his hand and aimed the camera at the mirror to take a photo of himself wearing that silly mask. He heard some distant sound, which seemed like it echoed from far away. Intrigued, he left the bathroom and headed to his bedroom to look outside for the source of the noise, completely forgetting that he still had the mask on. The distraction had stopped, so he shrugged and went back to the bathroom. On the way back however, the noise returned and it was much closer this time, it sounded like a deep bellow that came from right behind him. He froze and turned toward the source, but there was nothing. As the noise was getting closer and closer to him, he looked all around himself, starting to panic. The growl stopped, and Alex stood on edge for a few seconds before sighing heavily.

“Fucking hell, that growl scared me!" said the human, who then nervously laughed about it.

“A gifted one?" a soundless voice echoed in his mind.

“Holy fuck!" cried Alex, startled. “Who's there?"

“We are the spirits of the Kings. Ages have passed since we last were able to find one such as you!" rejoiced the strange voice.

“Wha-what's happening!"

“Do not fret, we will explain everything; first, we are hiding in the ornament which you are proudly wearing."

Alex wasn't sure what was going on, but the voice clearly said it was in that cursed tyrannosaurus rex mask. Scared for his life, the panicked human tried fiddling with the straps to get rid of the strange item that caused this commotion in his head. However, no matter how hard he tried, he couldn't remove it.

“Fear not, young one." said the strange voice, which had returned after a brief silence, “We mean you no harm."

“Fuck off! What do you want with me!"

“We understand your confusion. However, we ask that you listen to us. We have a contract for you, contract which you can accept or decline. You have our word that, should you decide to decline, we will disappear and never come back ever again."

Alex considered refusing right away, but something in his mind told him that this thing was honest, and that he would easily have the choice to be freed from this madness.

“I'll... hear you out."

“Good. Your veins hold our blood, the blood of the Kings. Your lineage is a noble one compatible with our souls. Such a rare happenance hasn't been seen in millennia! This entails that you are fit to become a King, should you wish it. This is the reason why we reached out to you today." the voice paused, as if to wait for a reaction.

“Aren't you guys going to tell me more about this?"

“Very well, we shall explain in more detail. Should you accept our contract, we will grant you the prestigious title of King, and all that it entails. You will be given a kingly appearance, a throne and a land to rule."

“I... I don't know. Will my life be better?"

“It will. For you will become a King, and will be given the appearance of one."

“If I accept, what will I rule over? Will it be over my city? My country? The whole Earth?"

“None of these, for we will grant you a new land. Earthians are ingrates unworthy of our greatness."

Alex closed his eyes as he gave surreal story some thoughts. A strange spirit who referred to itself as “we" offered to make him a king and give him a land to rule. He pondered for a moment, thinking about the pro's and con's. He honestly saw no con's to accepting; he'd be leaving this uncaring world behind along with his debts, his bad grades at school and so many more problems that made his current life shitty. There wasn't a single reason for him to not accept this opportunity he was given.

“I accept." Alex said solemnly.

The human however received no answer. He opened his eyes again and scanned the room, as if it would help him find the ghostly spirit that he had been talking to until a few seconds ago. After waiting five good minutes for the mysterious voice to come back, he gave up on it and sighed heavily. It may have been a once in a lifetime's opportunity to change his existence and he missed it, or maybe it was all just a hallucination? He remembered that his lunch was waiting for him, so he brought his hands behind his head to remove the mask. Except that he couldn't find the straps that held the dinosaur mask in front of his face anymore. Upon closer inspection of the back of his head, he couldn't feel his hair anymore either, his skin back there felt like some sort of scaly leather. He ran his hands carefully from the back of his head to the sides, where he couldn't feel his ears anymore. He continued until his hands were caressing the front of the mask's snout. His heart skipped a beat as he definitely felt the curious touch of his fingers against his face. He ran to the bathroom's mirror and looked at himself. A tyrannosaurus rex's head on his human body was looking back at him, mouth agape and eyes open wide. The reflexion was copying his every movement, he opened his maw, moved around his new strange tongue, blinked over and over again as if he couldn't believe it. He couldn't deny it: he had a dinosaur's head. Baffled by the situation, he exited the bathroom, headed to his bedroom and fell backwards over his bed, trying to make sense of the situation which was was far beyond his understanding.

Alex's whole body was feeling strange. He brought his left hand in front of his powerful maw to check what was wrong. His eyes shot open and he sat upright instantly. The back of his hand was now the same brown colour as his scaly head and his palm was the same beige as the underside of his jaw. Something weird was happening, he brought his second hand next to the other and surely enough, this one had gone through the same changes as the first one. He looked down at his legs, which were concealed underneath his pants. Curious as to which part of his body had changed in the same way, he removed his trousers, shirt and threw them away. His chubby belly was covered in beige all the way down to his crotch, and the rest of his body was the same brown as his head. He also had some darker brown stripes all over his arms and legs. Despite being very confused about this strange situation, he was fascinated by the change.

It was then that Alex felt it: a warm sensation spread through his whole body. His body temperature was quickly rising as the tingling quickly became an itching sensation. He watched down at himself while panting, and saw that his belly was quickly receding, the fat in his gut was melting fast as it was being slowly transformed into muscle mass. His wide legs and arms were next, all of the excess fat melted away as the warmth became a burning sensation. He was no longer chubby, he was even looking fit. The more fat disappeared from his body, the more muscles were growing to replace it. He went in just under a minute from overweight to perfectly fit. The sight was amazing to him. The dino-man stood on his feet and stretched his newly acquired muscles to get a feel for them. He flexed into various pauses which he remembered from a bodybuilding show that he happened upon some time long ago. An uncontrollable need to laugh took him, which he let out loudly, also surprising himself with a deeper voice than the one he remembered about. And the more time passed, the deeper it got. As soon as he picked on that, he stopped laughing and looked right in front of him only to see that his view was getting higher and higher. He was gaining a few centimeters every couple seconds. It was feeling great, except around his waist where his underwear was straining as he was growing. The dino-man was panting loudly as he was getting more and more excited about what was happening to him. He didn't understand it, but he loved every second of it! At some point, Alex's socks and underwear started ripping, unable to contain his growing body anymore. Pieces of fabric flew off, freeing his feet, butt and private parts. Unlike the rest of his body which had changed for the better, it looked like his cock and balls hadn't improved at all. Alex suddenly felt other changes happening in his body, his feet were remodelling into digitigrade ones with extremely large and powerful toes. Massive black claws which looked like they could tear through anything replaced his nails on his enhanced toes. The new structure of his feet made him lose balance and fall backward on his bed once more. The landing was harsh as he fell right on a nub that had formed above his ass and was slowly elongating. He yelped from surprise, sat upright once again and sent his hands to his tailbone to get a feel for what was happening back there. The growing appendage was getting longer and bigger with every second and it took a couple minutes to get used to moving it around. But when he had gotten the hang of it, he brought it in front of his face; it was a tail which had the same colour pattern as his body: brown with darker stripes on the topside and beige on the underside. He had stopped growing in height as he reached to just above two meters in height.

The sensations were extremely pleasurable for Alex, whose dick started growing hard. The whole length of his cock lost its shape, reformed into a pointy tool coloured bright pink, and a genital slip surrounded its base. Alex was panting loudly as he was watching his previously unimpressive package become larger and more sensitive with every passing moment. His dick fattened, widened, lengthened and started hardening anew, as it was only at half-mast after the change of shape. The changes also spread to his balls, which covered in the same scaly skin as the rest of his belly before his ballsack grew, expanded and dropped lower as his cum factories started growing bigger. The dinosaur couldn't believe his eyes; his balls had become as big as bowling balls, were sloshing audibly with cum and his dick was already twice as big as it used to be and it was still expanding more. He wrapped his hand around his shaft, amazed by the fact that it was so large that one hand couldn't completely encircle it. The touch felt amazing. Because of the sheer size his cock was growing to, he was easily able to put his second hand to join the first around it. He began rocking the massive tool back and forth, making it grow even harder from the pleasurable stimulation. Every movement of his hands around his dick felt amazing. When the large tool stopped hardening, it reached to his top row of abdominals at about 35 centimetres and was leaking pre thanks to the horny tyranno's stimulation. The rhythm of his fapping accelerated more and more as Alex was feeling his orgasm approach; the build up was intense, far better than it ever was before. He closed his eyes and threw himself backwards on the bed as he came. His cock began shooting gallons of cum, which splattered on the ceiling, on the walls, on the window, on the furniture, everywhere. The immense pleasure that rocked his body was intoxicating. His massive shaft was firing his enormous balls' content all over his room. Everything, including himself, was covered in splatters of seed when his flow finally weakened. As the peak of his orgasm was over, he let go of his cock which began leaking cum over his chest and he rested his hands on top of his soaked pectorals. As he was trying to recover from the intensity of his orgasm, he passed out and dreamed of his new body and what he'd do with it.

Alex was woken up by the chirping of birds and the rustling of the wind, which was strange considering that his window was closed. When he opened his eyes, the first thing he saw was the canopy of trees above him. He quickly rose to a sitting position and looked all around himself, it was a beautiful landscape: plains as far as the eye could see, a lake a couple hundred meters away, a volcano and mountains in the distance, exotic trees all over the place and other anthro dinosaurs minding their own business. There was a stegosaurus sitting against a tree holding a piece of paper and seemingly write something on it, there were a skinny pterodactyl and a large brachiosaurus sitting on a fallen tree, which they used as a bench, who were talking cheerfully and there was a raptor who was running on the road. Alex blinked twice. A word appeared in his mind: realm. Was it the doing of that strange spirit? He smirked. He started devising plans on conquering this land. The more he tried to think however, the more his raging erection and churning balls were drawing his attention away from his plan. He looked down to his large shaft and realized that his snout was very close to the tip of his cock. He let out his tongue and lapped at the pre soaked tip. It sent a shock through his body, so he leaned further down and began taking his dick in his mouth, eagerly sucking on it. His balls were sloshing audibly, as if they too needed some love, so he used his hands to caress, massage and squeeze them. He ran his tongue in circles around his cock, lapped the leaking pre, suckled on his own meat and stimulated his balls' cum production. Alex always wondered how it would have felt to suck on his own cock, he had finally the answer: it felt amazing. He started moving his head up and down while sucking on the shaft, going down on it as much as he was physically able to. For some reason, he felt his shaft grow bigger in his mouth and his balls expand in his hands. It wasn't by a lot, but it was definitely noticeable. Pleasure hit him as he was brought to a second orgasm, much bigger and better than the first one. The load that was shot in his mouth felt so incredible that he tried to drink as much as he could, but it became too much and he had to let it go as the flow was too strong for him to handle. He freed his cock from his mouth and then watched the blasts of cum that were fired from his shaft landing all over the anthro stegosaurus from before that was looking at him mouth agape. The raptor runner was running in place while looking at the lewd show and the two friends who were talking earlier were now silent as they too were eyeing the tyrannosaurus. Shot after shot of cum landed all over the stegosaurus, whose paper was now completely ruined, but that didn't seem to faze him at all as he was completely mesmerized by Alex's orgasm. It finally weakened and as the people's attention was drawn more and more on the tyranno, his body started feeling the same way as back when he was in his bedroom: a tingling warmth spread across his body, strengthening his muscles and growing him slightly bigger with every passing second.

The stegosaurus coated in cum let go of his paper and pen, which fell with a splash in the puddle on seed he was standing in, got on his knees and grabbed Alex's growing shaft in his hands. The tyrannosaurus didn't even have the time to ask what was going on that the other dinosaur was down, sucking on the expanding cock. Alex was growing bigger every second, he didn't understand why it was happening but he absolutely loved the feeling he got from it. He could feel the other man's mouth tightening around his expanding tool, and it was the best feeling. Every second, the stego was going down more on his cock and the shaft pushed deeper by expanding in length. An ankylosaurus and a spinosaurus joined the other three onlookers, gathered around the tyranno and stegos. While giving a show to others in public felt embarrassing to the Alex, it was also oddly exciting. The smaller dinosaur began massaging Alex's growing balls, which were already overproducing cum once again for another load. The stego suckled feverishly, deepthroating the massive tool of the larger dinosaur and drinking eagerly all of the pre that came out of it. Alex, who was getting closer and closer to his release, grabbed the stegosaurus by the first set of spine plates and pulled his partner further down on his cock. He started using his grip on the other guy to facefuck him wildly until he finally came, the impressive load that was fired deep inside the stego made his belly expand fast. Waves after waves splashed inside the stretchy gut of the dino, who was all too eager to welcome the load. After minutes of filling, the tyrannosaurus forced the stego off of his cock. He was expecting to pull out a bit more than his previous size but had to pull a lot more instead, his shaft had grown to 60 centimeters. The stego grabbed the thick pulsing cock, which was still shooting weakly cum, and aimed it at himself with his maw wide open. He swallowed some of it, purposefully let some drip down on the sides of his mouth and sometimes aimed at his chest instead of inside his awaiting maw. When it finally stopped firing semen, the stego swallowed one last time and ran his hands against his front side to spread the cum all over himself.

The stegosaurus then turned away from the tyrannosaurus rex, lowered himself on all fours and lifted his spiky tail for the king of dinosaurs to see. The sight of this hole waiting for him to plow into made Alex's cock perk up and made his balls produce more cum once again. He stood up, realizing that he was much taller than before – about 2 meters and half – and stepped closer to the needy slut in front of him. He then fell on his knees, ground his large shaft against his subject's butt as if to tease him. After a couple seconds of that, he prodded his cock against the tight asshole and without any sort of preparation, pushed inside. The stego moaned loudly of pleasure, which eventually attracted the attention of even more dinosaurs around him, who then started looking at the lewd show. Alex didn't care anymore if people were watching him; or rather, he was glad they did because it looked like this was what made him grow: the admiration of his followers. He didn't have to do anything for his cock to push further inside the stegosaurus, it was expanding in length and girth, thus pushing deeper and stretching the hole wider. Alex was however eager to fill his loyal partner and began humping gently, every thrust pushing a bit more of his cock inside. He realized the he was also growing in height and in muscle, making him a very muscular giant, but it didn't matter much to him as all he wanted was to burst into orgasm once more. The movements accelerated, he was still pushing more of his growing cock into the stegosaurus who was completely lost in pleasure. At some point, a rather large bulge started protruding from the smaller dino's belly; it was Alex's massive shaft that was pushing the walls of the stego's insides. The tyrannosaur found that to be incredibly pleasuring and continued forcing more of his cock inside. Eventually, he was balls deep. He started plowing wildly in small but fast movements, making his growing balls slap audibly against his partner's thighs. Even though he was already fully hilted, each thrust inside made the protruding bulge longer and larger. Alex estimated that his giant cock was now well over a meter long. He grabbed the bulge in the stego's belly and squeezed around it to stimulate his cock. That simple action brought him immense pleasure and he once again came. Waves after waves filled the stego's belly, which looked like a balloon as it was expanding with warm rex cum. Some of the onlookers started fapping to the show, fascinated by the growing tyrannosaurus and the incredible aura he had. When finally his cock stopped firing cum, the stego looked extremely pleased; he was patting his overfull belly and was trying to keep his mouth shut to retain as much of the load as he could. Alex slowly pulled out, he was exhausted by all of this. He pulled and pulled, wondering just how big his cock had gotten. When finally it plopped out of the stego's ass, it flopped down toward the ground where it spewed some more cum. The tool was 1.2 meters long, and he stood now at 3.5 meters tall, very muscular.

As he was looking at his impressive expanding body, some of the onlookers started cheering for Alex. He grinned wide and began striking random poses. Some were meant to show off his massive musculature, some were for teasing his audience and some were just to show off his giant growing cock. The only thing they all had in common was that he was growing bigger during every single one of them. He showed off his expanding biceps as he reached to 4 meters. He flexed his massive pectorals as he grew to 4.2 meters. It continued on with him making various poses for an ever increasing crowd until the next pose was him sticking his tongue out of his mouth and almost let it touch his 2 meters pillar of flesh as he grew to 5 meters. At this point, he was so horny that he had to fuck once again. Blinded by lust, he grabbed the large brachiosaurus from earlier by the waist and positioned him just above his pulsing cock, which was leaking liters of pre. Using his pre to lube the asshole of his next partner, Alex began pushing the smaller dino down his shaft. As soon as the brachy was down half a meter of cock, the tyranno grabbed his partner's legs and began pulling down. His shaft was so wide that the bulge forming inside the smaller dino was impressive even though the brachy was a beefy guy. The progression of his cock was visible thanks to that bulge which travelled up inside the tyranno's toy, reaching ever higher on his body. It had already gone past the abdominals and was slowly reaching up to the collarbone of the smaller dino. As he pushed more of his shaft inside, the bulge began distending his toy's neck until the maw of the brachy was forced open as the tyranno's dick went all the way through. Alex used his grip on his partner's legs to use him as a fleshlight around his growing shaft. The crowd around them was in complete awe at the achievement of him pushing his cock all the way inside. He fucked wildly his fucktoy, pulling his cock back inside him before forcing it out of his mouth again. The growth and this strange way of fucking another guy brought him enough pleasure to drive him to another orgasm. The underside of his cock swelled slightly as a torrent of semen travelled through it until it reached the tip, which fired cum all over the place. Alex grabbed the brachy and his shaft and started aiming them at the crowd. Seed splattered everywhere around them and on everyone in the audience. All were eager to get showered in their master's essence, and Alex complied. There was only one dinosaur that wasn't completely drenched, it was the brachiosaurus. And so, Alex began pulling the dino up his shaft, forcing his tip down his partner's neck once again. As soon as it went through, the brachy began spewing the load that was shot in him. The flow out his mouth weakened quickly however, as the cock was pulled back down more and more and started filling the brachy's belly instead, at a pace faster than for the stego before. It didn't last long though, as Alex wanted to shower that dino with his cum as a sign of gratitude for the amazing sex he just had. As soon as he pulled his 2.5 meters cock completely out of the brachy, Alex let the cum ballon his toy had become fall to the ground and aimed his cock at him to cover him with his kingly semen. When his flow was almost stopped, the tyranno let go of his cock, which dripped some more cum. The whole area around them was like a pool of his semen, and all of the dinos here were either drinking from it or fucking and sucking each other. It seemed like his seed had the strange power of enslaving anyone coated in it to his will, thus giving him more mass and height. He loved his new life as a king, and he would make the most of it. He was however feeling a little sore from all of this action, so he allowed himself a bit of rest. He took another good look at himself and marvelled at his looks. He had to be at least 6 meters tall and sported some very defined muscles.

As he was trying to relax, a nearby settlement of triceratops rushed at him with weapons drawn, but their fighting spirit was quickly broken by the scent of sex and the hypnotizing musk of the dino king. They all instantly swore loyalty to him, causing him to grow once again. More warriors arrived, and all of them shared the same fate: they surrendered and joined the other dinosaurs that were fooling around in the puddles of semen. Every new follower brought him more energy and renewed his sex drive. His balls ached as they began producing another, bigger load and his cock rose to full attention once more. With the whole tribe at his service, he was now reaching to 12 meters tall and his cock was half of that in length. His servants, who picked up on his horniness, all approached him. Alex carefully got on his knees and pushed his cock down toward the ground to invite his worshippers to work on his glorious cock. All of his them started working on the immense dick before them: they licked, caressed, massaged and nibbled against it. Some of them even humped against the soft pink flesh, bringing themselves to orgasm and shooting their loads over the shaft. The way all of his worshippers worked hard to bring their king to orgasm was very satisfying to Alex, whose balls were swelling with an ever growing load. The stimulation was so amazing that he came once again. His gigantic cock started spraying seed like an uninterrupted hose. The flow was so powerful that it travelled hundreds of meters before splashing in a lake so loudly that it could be heard from where they stood. The waters quickly coloured white as the incredible volume of semen shot inside was spreading through the whole body of water. Because it reached far and deep in that lake, it started converting its inhabitants into loyal worshippers for himself. Whole underwater settlements of aquatic dinosaurs began swearing allegiance to the king they hadn't met yet, and Alex began growing thanks to the power that he gained thanks to the faith of his new followers. Meter after meter piled on his frame, his muscles swelled more and more, his cock elongated and widened and his balls surged in diameter. The increase in his sizes meant that his cock was shooting seed farther away with every second, splashing more of the lake and enslaving more dinosaurs to his will. When finally both the flow of his orgasm and the growth stopped, he panted heavily. He was now 30 meters in height, and his glorious shaft was 20 meters. From the shores of the lake he just painted rose hundreds of aquatic dinosaurs, who all walked toward their king. They knelt for a second – just enough time before they completely lost themselves in lust – and then rushed to help the many other devotees in worshipping their king.

While the followers were doing a great job of stimulating their king once again, they were just too small to do the job properly. Alex brought his own hands and tongue to the myriad that were already working on the gigantic shaft. He licked, he hugged, he kissed, he caressed, he squeezed, he massaged, he did everything he could to work on his gigantic cock for another release. He started growing slowly once again as the cum lake was flowing into a river and reaching some new body of water to enslave more dinosaurs to his will. The sensation of power that ran through him was bringing him great pleasure, greater than anything his followers could give him and greater than even his own self-pleasuring. The sensation was so amazing that he was sent to another orgasm. His cock sprayed seed, which landed on the mountains in the horizon. The intoxicating taste and smell of his semen instantly converted all of the living beings on the mountain to his will, which made power rush through his veins, thus growing him even more. The increase in power that flowed through his veins while growing him brought him so much pleasure that his orgasm was renewed forever after. With the coating of the mountain, he had grown to 90 meters and his 75 meters cock shot more cum everywhere. The sight and the musk of that gigantic growing tyrannosaurus were enough for thousands of followers to join as his servants, which once again fuelled his pride, his growth and his orgasm. In no time he grew to 360 meters long with his cock the same size as himself. Semen flowed in seas, covered whole countries, enslaving even more anthroes to the god he was becoming. He grew and grew without stopping. With the rush of power through his veins he became even more powerful, any dinosaur that laid their eyes on his body was instantly brought to orgasm as they became servants of his. His godly body continued growing bigger, his cock surged even more and completely drenched continents and oceans and the followers he was gaining thanks to that were making him grow even more. He had reached to 2 kilometers tall, extremely muscular, with a 2.5 kilometers cock that spewed nonstop oceans' worth of semen.

Alex truly had become the king of this world. No, he wasn't a mere king, he was their god. He continued growing and cumming all over the world until every single one of its inhabitants was a loyal servant of his.