Sci-fi weight gain stories

A chubby hero lands in Blackwater City with clues that point to a dastardly plot with huge implications... (Multiple gainers. Male AND female WG)   More ▼

BW City's favorite chubby-chasing super-crook is back in an all-new adventure featuring hijinks, harems, romance, robbery, and loads and loads of weight gain! (COMPLETE)   More ▼

This clinical study documents the forced physiologic expansion of a euthyroid female (BMI 18.5) to the absolute limits of adipose storage via extreme hyperalimentation, targeted pharmacology, and enforced sedentism.   More ▼

I agreed to a medical experiment that did things to me. I don't know what exactly, but I can do things now. I swallowed my doctor whole, like a snake eating a mouse. Worst of all, I feel no guilt, in fact, I want to do it again. What is happening?   More ▼

Commupance   More ▼

Dr. Matthias developed a robot with the purpose of improving human life, programmed to give as much comfort as possible to its owner. Unfortunately, he was too busy to test, and hires Bruno to be a test subject… Too bad Bruno has a huge appetite   More ▼

A sci fi dystopian story about a man who works making people into human batteries for Zerka Corp. Who's name may or may not be a reference to something.   More ▼

When a shady farming conglomerate prepares to roll out a product that will threaten obesity as we know it, it's up to a dastardly supervillain to...save the day?   More ▼

James had it all figured out. His last year of college was gonna be easy. But when Kira crash lands into his life, his plan is ruined. She’s brilliant, funny, cute and also an alien. One with BIG customs he must oblige if he wants a chance with her.   More ▼

A fated meeting between past and present. An unlikely partnership destined to break the internet. As the grand experiment comes to a close, its participants will find their lives forever changed. [Updated 6/05/2025]   More ▼