Www.cyoc.net
A simple idle game focused on M -> M fantasy creature transformation, where you set off on adventures, collect items, and end up turning into whatever defeats you. A collection of games featuring transformation as a story element or game mechanic that are available on Itchio, maintained by SnepShark. Developers : Now that so many games have been delisted it is difficult for me to find more games to add!
My Story
It's finally Saturday and you get to go try out this new place that opened up that everyone in town has been talking about, Transcending Gravity. People have said it's quite the experience, with some people coming out completely different or just the same. Places of Interest: Unique Wedding Invitations for unique wedding needs. Color Copiers found here. TF Games
We would like to show you a description here but the site won’t allow us. Hey there, welcome! Enjoy immersive, page-turning , and oh-so-satisfying transformation stories here. Transformation Paradise
Welcome to Transformation Paradise, the ultimate destination for gender transformation (TG/TF) stories, captioned pics, audios, and videos by author DK Masters. Explore sci-fi, fantasy, kink, and magical transformations like never before!. Everyone who does any sort of scripting has to try to write the obligatory choose-your-own-adventure-and-add-your-own-new-episode-to-the-end program at some point. Who am I to argue with fate? Transformation Stories
Interactive Stories are "choose your own ending" stories started by an Author and continued by any member that wishes to participate. After each chapter of these Transformation Stories, readers are given a few plot choices and must choose the direction of the story. . 
Cyoc.net
My Story allows you to do just that! Pick your favorite genre, customize your avatar, and choose your relationships in our interactive stories where your choices determine the ending! Do you have what it takes to be crowned as ultimate Drama Queen? Will you show mercy or did they have it coming?. .
TG/TF Choose your own adventure (Male start)
You know the drill; just click on the links at the bottom of each page to choose your path through the story. However, this program does include one feature that's at least moderately unusual. . 
The next CYOA by Hiros53 on DeviantArt
The original interactive transformation fiction site, still featuring the famous Choose Your Own Change interactive community buil. .