Suddenly you heard a couple of the guards muttering to each other behind you, and then they grabbed you and another prisoner by the arms and marched you past the adventurers and towards another section of the tavern. "What - what's going on?" you managed to ask, unsure if this was better or worse than the fate of the man who'd just screwed - and become - an orc.
"There's more than one group of adventurers here, pal," the guard said. "And it sounds like they want their due too. Gotta keep everyone happy, you know." There was a tone in the man's voice you didn't like, but you didn't have time to think about what it meant before you and the other prisoner were shoved through a door and into a new room.
It looked much the same as the one you'd just been in, though the smell was marginally better. This one too was full of nude adventurers, but whereas the ones in the other room had all been male, these all appeared to be women - and while some of them seemed to be human, most of them were decidedly not. As the door shut behind you, they all looked up from their drinks and turned to face you, most of them with lustful light in their eyes. "Well, well," a buff barbarian woman said. "Looks like we've got some new meat, ladies. They sent us some pretty boys this time - not that they'll be boys anymore when we're through with them."
You heard yourself gulp loudly, and then you saw one of the adventurers walk forward and grab your fellow prisoner. She was some sort of demon creature, generally human in shape but with red skin, catlike yellow eyes, and a pair of short horns sticking up out of her hair. She was tall for a woman, her body lean and taught with muscle, and she licked her lips suggestively as she ran a finger along the prisoner's face. Then she bent down and undid his pants, revealing his erect penis, and wrapped her lips around it.
The prisoner's eyes rolled back in his head and he began to pant; his face flushed pink and then became a deeper red as his features softened and his stubble vanished. His lips turned an even darker red, almost black, and puffed up to a greater fullness, and as they parted they revealed teeth lengethening to fangs. His eyes turned yellow and his pupils narrowed as his hair turned jet black and grew out to his waist. His body shrank and narrowed, becoming small and lean except for his hips, which expanded into a rounded heart-shaped ass; his pants slipped down around it, revealing toned red legs. Then as he drew a deep breath his chest expanded, a pair of firm, shapely breasts bursting free of his shirt, nipples standing proudly at attention. Finally he gave a great gasp as his voice jumped up several octaves, and the demoness pulled away to reveal that while she'd started out sucking a dick, she'd ended eating out a tight vagina. She stepped back to examine her handiwork and smiled, the new demoness standing dazed while the crowd cheered.
So was this to be your fate, too? To lose not only your humanity but also your gender? Did your crime really merit that punishment? Your fears seemed to be confirmed as the barbarian woman looked over at you and nodded. "All right, you're next," she said. "Who wants to give him a whirl?"