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Formamorph [v3.0.0] [Jake James]

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3.9 Rating 131 Views Updated Sep 24, 2026

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An advanced, AI-powered text RPG engine with extensive 3D character customization, you can create your ideal avatar and watch as

An advanced, AI-powered text RPG engine with extensive 3D character customization, you can create your ideal avatar and watch as your body changes and evolves throughout your adventures. From hairstyle and eye color to starting body shape (hourglass, pear, apple), the customization is in your hands.
The engine focuses on the bodily transformative aspects of adventure. You can experience changes such as the size of your belly/breasts or the overall fat distribution in your body. You can undergo virtual pregnancy, breast/belly inflation, weight gain, and more. With AI-powered storytelling, each playthrough is unique and tailored to your choices.

Thread Updated: 2026-09-22

Release Date: 2026-09-22

Developer: Jake James – Website – Patreon – SubscribeStar – Discord

Censored: No

Version: 3.0.0

OS: Windows, Linux, Mac, Android

Language: English

Store: itch.io

Other Games: link

Genre:

Erotic, Female Protagonist, bbw, belly, inflation, pregnancy, vore, weight-gain, Adult, Interactive Fiction, Character Creation

Installation:

1. Extract and run.

Changelog:

v3.0.0

Added

Persona
- Entity editors accept pronouns, show “it/its” among the examples, and send them to the AI
- A Persona checkbox above Type in both entity editors marks an entity you can play as
- The library’s Entities tab can show only your personas
- You can set one persona as your default
- World exports, character cards and published listings keep an entity’s pronouns and Persona mark
- Enter World opens on a Persona category where you pick who you play
- The game’s side panel shows your persona, and you can change it mid-game
- You can play as one of a world’s own entities
- A world can say who the player can be
- Saves can record the persona you play, and the entity you play leaves the cast
- The staged planner takes the persona’s name and aliases as the player, in place of trait names
- A Persona chip in Settings → Prompts sends the persona you play to the AI, and the built-in presets carry it
- Every Settings and World Editor prompt-variable chip supports formatted headers, and built-in presets hide empty single-chip sections in every style
- A Player Name chip lets world, entity, dictionary and opening text name the player
- A library persona’s own placeholders work in play
- The Entities tab imports SillyTavern’s persona backup
Native Reasoning
- A switch and a strength on every prompt, in every Thinking mode
- The Reasoning Budget slider caps thinking on LM Studio, not only the built-in engine
- The AI Context viewer names the reasoning fields each request carried
- Formamorph reads your server’s own capability list instead of testing it
- A catalog tells Formamorph your model reasons before you take a turn
- Kimi models get the controls their own model id earns
- A model that shows its thinking is believed, and one that never shows it stops being offered the controls
- On OpenRouter, each model gets the controls it actually takes
- On a vLLM server, the controls wait until a reply shows the server’s own reasoning
- Anthropic and Google endpoints get the controls their own API takes
Openings
- The World Editor’s Openings panel holds several openings, and a new game draws one of them by weight
- An opening set to open as Narration is page one exactly as you wrote it, and the game starts on it at once
- Entities carry their own openings, drawn with the world’s when the entity is at the starting location
- The Openings checkbox follows whether the world has openings
- Adding an entity that brings openings checks the world’s Openings checkbox
- The World Editor’s Openings panel shows every opening in the world, grouped by owner
- Entities you pick at Enter World open the world with their own openings
- SillyTavern JSON and PNG cards import their greetings, with author and tags kept in the library
- The Test Bench’s Opening tab shows the openings a new game can draw, and what each one sends on turn one
Prompt Presets
- Prompt presets you made have an Overview in Settings → Prompts, and it goes with the preset when you share it
- Community Creations separates Prompts from the main upload types above Contest and lets you filter presets by model
- You can publish a prompt preset you made to Community Creations
- On a narrow screen, the preset actions in Settings → Prompts sit in one ⋯ menu
- You can download a prompt from Community Creations and switch to it with one button
Demo AI
- The built-in hosted AI endpoint reads Demo AI where it read Default
- A one-time dialog says what the Demo AI is when you first play on it
- A Demo AI badge shows in the game view while the Demo AI writes your narration
Narration Layout
- Re-generate Stats sits to the right of Edit Stats in the Stats panel, and both buttons have tooltips
- Chat shows the story as a conversation, keeps scene generation in menus, and waits for narration before offering Jump to Latest or choice regeneration
- Pages shows each turn on a card with unnumbered choices, a segmented Continue row, scene generation in menus, and choice regeneration only after narration
Library Folders
- A folder tile in the library’s grid layout shows the top-left corner of the folder’s own board
- A folder opens with a zoom into its tile
- Library in a folder’s header zooms back out to the folder’s tile
Contest Podium
- Two or more worlds can share a place on a contest podium
- The Podium dialog’s entry grid shows the standings
- A contest can end in a tie, and every place a tied world holds reads as a full win
Likes
- The heart in Community Creations works without an account
- The likes you gave before signing in become your account’s
- A world you downloaded asks once, after fifteen turns, whether you like it
Settings prompt navigation uses smaller subsection labels, a filled active row, and independent scrolling
The Privacy Policy now covers liking a listing while signed out, before anything can be liked that way
The game view’s side panel tabs have icons and fill the panel, and the narration sits in the exact center
Settings → Prompts heads every surface of a prompt with the line that says what it does
A Max Output row in Settings → Prompts sets how many tokens each capped prompt may write, and Discover Entity and Milestone Select get their own prompt tabs
Settings copy reads the way a person writes it
World Editor text fields gain a Values tab that shows each placeholder open on its drawn value, lets you edit that value in place, and has arrows that step to its other values
Every placeholder chip’s pop-out shows World | Unique, and says why it takes no choice where it cannot
World Editor help reads the way a person writes it
Quoted speech in the story reads in its own color, which you can pick for light and dark mode, and can be set in italic
The library entity and dictionary editors share a layout, put Author above Tags, and preserve credits in shared files
A dictionary in the World Editor has Details and Placeholders tabs
The World Editor tells you when it unlinks a copy whose library item is gone
The World Editor’s Custom Prompts field takes placeholder chips, and play sends each chip’s value in the prompt
Open Chat is a new bundled world for talking with an entity from your library

Fixed

Community Creations
- A creation’s details open with one fade on the website
- Thumbnails stay between launches when you are signed in
Prompt and Placeholder Chips share dragging and undo in Settings → Prompts and the World Editor, with accurate blank-line drops and visible blank affix lines
The narration reveal’s Move, Scale and Blur effects stay visible on a fast model
An entity that stays in the scene stays in the Entities tab while the next reply streams
A field’s Preview keeps a placeholder’s drawn value when you re-spell that value on the Placeholders tab
The library editors use only the entity’s or dictionary’s own placeholders
The Admin Panel’s tabs are reachable on mobile
Selected text in a stat code field is readable
The Privacy Policy on formamorph.ai says what the one in the app says
Deleting a location in the World Editor removes it from every entity and Connection
The Notes tab warns only when the narration prompt really has no Notes chip

v2.18.0

Added

World Editor
- The World Editor’s entity panel now splits its fields across Profile, Descriptions, and Placeholders tabs
- The World Editor’s stat panel now splits its fields across Details, Descriptors, and Code tabs
- The World Editor’s location panel now splits its fields across Details, Presence, Media, and Pins tabs
- The World Editor’s trait panel now splits its fields across Details, Stats, and Pins tabs
- The dictionary entry panel splits its fields across Details and Matching tabs in the World Editor and the Library
- The World Editor’s field labels and help lines now read the same way on every panel
- The World Editor’s Overview tab orders its fields and labels them the same way as the other panels
- The help lines on the stat, entity, and location panels read as short plain sentences
Community Creations
- You can publish a Player Avatar to Community Creations and browse published ones under Avatars
- A Player Avatar’s details show whether it can be shared to Community Creations
- Community Creations picks its section with a sidebar rail on wide windows and a dropdown on narrow ones
- The website Community page lists the most-liked creations first
A Library tile’s menu lists three Groups directly and opens a searchable picker for the rest
Every website page shares one header with a Community link and an account menu
The Locations Canvas menu groups Grid and Connection Style rows under titles and gives every action row an icon
You move entities and dictionaries between a world and the Library without an export file
The World Doctor shows a Publish Size bar that measures the world against the publish limit

Fixed

AI stat updates send plain names and accept formatted replies for values and maximums
Text to Speech reads formatted text without speaking highlight colors, superscript markers, task checkboxes, or table layout syntax
Enter World keeps traits, the starting location, and Library Additions in one workspace and remembers additions for each local world
An entity’s Type field now sits with its Name and Aliases, above the descriptions
Every image, sound, and 3D model dropzone brightens its border when you hover it
A trait group’s Player-Facing Description supports markdown
The website’s Like control highlights on hover and fills the heart when liked

v2.17.0

Added

Text Endpoints
- Each endpoint now has independent sampler switches
- User endpoints can now omit Max Output
- A rejected endpoint override now turns itself off without losing its value
- Prompt sampler fallbacks now name the endpoint behavior they use
Android App
- Formamorph is now available as an Android app
- A new Install on Android page on the wiki explains every step and every Android prompt the phone install puts in front of you
- The Android app updates itself from the main menu, the same way the desktop app does
- On Android, every export opens Save As so you can save the file to Downloads or another folder
- On the Android app, the hardware back button now closes what is open instead of closing the game
Library Board
- The library board now rearranges the way a phone’s home screen does: nothing moves until your hand rests
- A folder is now made by resting on the half of a tile facing the one you are carrying, and the tile says so before you let go
Website Accounts
- Community Creations on formamorph.ai/community now gives visitors shareable links, downloads, Like controls, and an Open in app action for the same creation in the browser game
- The adult-content answer on a profile now follows a signed-in account to another browser or device
- The game now restores a signed-in account’s adult-content answer before it opens Community Creations
- Accepting the adult-content warning on the way into Sign In or Create Account now saves that exact answer to the account that opens
- formamorph.ai now has its own Sign In and Create Account pages, so an account can be made and used without opening the game
- Creating an account on formamorph.ai now includes the Privacy Policy, so the account is ready to use without opening the game first
- The landing page now shows your sign-in status at the top right, with a slightly larger Sign In control and a matching-height signed-in circle
- Every account now has a shareable page at formamorph.ai/u/yourname, with published creations framed by subtle theme borders
- Signing in on formamorph.ai now reaches the game in the tab beside it while you watch
- Your account settings now have a page of their own at formamorph.ai/account, so a password, a picture, or a deletion no longer needs the game open
- Every formamorph.ai account page now keeps Profile, Account Settings, and a borderless Sign Out control with an icon in its header
- An account can now carry an email address, which is what password reset will run on
- Forgotten passwords can now be reset from formamorph.ai
- The landing page and every formamorph.ai account page now follow the app’s light or dark choice
A feature that needs a newer version of Formamorph now says which one, and offers an Update button instead of failing quietly

Fixed

Website account links preserve their requested page instead of redirecting to /site-app/
A tile’s right-click or long-press menu closes on a click anywhere else without that click reaching what is under it, and on a touch screen it opens for a normally held finger and gives way when that finger drags on; confirming or canceling world deletion leaves the library clickable
Dragging a library tile below the board stops one row under it, an open-space drop lands where the ghost is, and the dropped tile stands in its cell at once
Publishing a world, character, or book with a large thumbnail is faster, because the upload carries one copy fewer of the image

v2.5.0

Added

Two more local models added, one for mid-range cards and one for the top end
A new top-tier local model: G4 MeroMero 31B
On mobile, switching library sections is now a bottom tab bar
Your VRM models now have a library of their own
The model you start with is now yours to manage
Click a model to look it over, test it, and see who made it
New installs now point you at the model you need, instead of failing on the first turn
The Readme can now use placeholders
A dead endpoint now says so — and notices when you fix it
LM Studio with nothing loaded is now caught before you play, not after
World Editor tabs can now explain themselves

Removed

Three of the smallest downloadable models are gone, because they couldn’t actually play

Fixed

The “nothing here yet” message in Community Creations is now centered
Selected multi-select chips are never invisible
Binding a stat to a body slider now sees every model, not just the default
Community Creations dialogs now name the right kind of thing
Entity thumbnails in Community Creations no longer crop faces off
Starting a game no longer wrongly blocks you when your AI server is actually ready
The model Formamorph suggests for your card is now the best one, not the biggest
Large models no longer refuse to load on a graphics card that has room for them
A turn that comes back empty now tells you, instead of doing nothing
World editor text boxes can be dragged taller or shorter again
Trait descriptions read as words, not raw code
Traits can now lower a stat’s minimum, within limits
Deleting a character cleans up after itself
Image tags no longer leak into the story
Locations no longer describe themselves twice
The Readme popup is easier to read
Text boxes can no longer be dragged sideways out of their column
The Reincarnated Drone world’s description no longer shows raw placeholder codes
Desktop updates on Windows can no longer get permanently stuck
A missing launcher now explains itself instead of crashing
Placeholders in a world’s Readme now read as words, not raw code
Deleting a bundled world now sticks
Auto response length no longer cuts turns short

v2.4.0

Added

Import many files at once
Jump to a page
Autosave
The Save menu now lists your existing saves
Back up and restore your library in one file
Optimize a character’s portrait when you import it
The desktop model catalog now includes reasoning roleplay models, backed by data
Built-in worlds refresh themselves
Old saves pick up newly added stats
Built-in worlds no longer warn about custom code

Fixed

Each world shows its own Readme again
The AI now knows what place your location is inside, and you can walk back out of it
Long dropdown lists no longer run off the top of the screen
Updating and deleting your published worlds works again in the desktop app
Long lists scroll again on mobile
Your library is now marked as persistent storage
No more endpoint errors when you’re not using reasoning
Popups no longer flash their empty state while closing
Saving a backup is reliable everywhere
Downloading community worlds quickly no longer loses one
Clicking a character opens the right one
Dragging a chip and dropping it outside a text box no longer misplaces one later
Stat descriptors accept a 0% threshold
Starving no longer wipes out that turn’s other stat changes
Loading a save can’t hang on a worker failure
The oldest saves restore their traits and body changes
A clearer message when the web app can’t reach your AI server

v2.3.0

Added

The “What’s new” popup highlights your version
The “What’s new” popup surfaces the versions that matter to you
The library’s top bar collapses to one menu sooner
Skip Customize is clearer when entering a world
Choose how many characters the director stages (Staged thinking)
Toggle the character’s animation while customizing
Character customization works in portrait now

Fixed

Chip pop-outs stay open while you adjust options
The placeholder Edit/Preview toggle only shows when a world has placeholders
Popups fit the visible screen on mobile
Turn pager is tidier on mobile
Re-generate is icon-only on mobile
The in-game header is tidier on mobile
The World Editor works on mobile
The placeholder editor works on mobile
The character model fills its panel on mobile
The game view uses the full screen on mobile
The main-menu footer is less crowded on mobile
Community Creations filters tuck away on mobile
Settings tab widgets fit narrow screens
Character customization’s Back button becomes Abort on the first step
The enter-world steps dim the menu behind them again
Location Change is skipped in single-location worlds
Community world thumbnails zoom again
The world details popup no longer scrolls sideways on small screens
The character model renders cleanly in its viewer
The app no longer shows a blank screen over plain HTTP
Scrolling the main-menu card grids on touch no longer drags cards around
The World Editor’s + button always adds an item
The World Editor runs edge-to-edge on mobile
Popup buttons don’t crowd together when they stack on mobile

v2.2.2

Added

Placeholders — reusable values and randomness in your worlds
Preview placeholders while editing
Edit a shared item’s placeholders in the library
Shared entities and dictionaries keep their placeholders

Fixed

Downloaded worlds now show their thumbnail in the library — and work fully offline

v2.2.1

Added

Turns finish faster with concurrent requests
The GPU memory widget now shows Formamorph’s own share (Desktop)
Big models and multi-GPU rigs are now supported (Desktop)
Flash Attention is now on by default (Desktop)
The bundled desktop engine now handles parallel requests

v2.2.0

Added

The desktop app can update itself
Multi-select dropdowns now match the theme like the regular dropdowns
Stat-change bars animate consistently everywhere, and respect “reduce motion.”
Ctrl+click (or long-press) a choice to add it to your action instead of replacing it
Entities can be organized into groups (folders)
Paging back to an earlier turn now shows that whole turn, not just its text

v2.1.0

Added

Share prompt presets
A first-run welcome animation
Native Reasoning control for reasoning models
Reasoning Budget on the built-in desktop engine
See a reasoning model’s thinking

Fixed

The welcome animation now matches your theme
The desktop app now works with local AI servers that don’t send CORS headers

v2.0.3

Added

Saves are now organized into per-world folders
Per-prompt sampling controls
Steadier scenes in Planning mode
Planning mode fills the scene list
The Entities tab is now a live scene list
Portable desktop builds now keep everything in their own folder

Fixed

Load Game menu no longer clips or overflows
Long names in dictionary and picker lists now clip with “…” instead of overflowing
Opening the World Editor from the menu now animates and no longer reloads the whole menu
New worlds no longer start with a broken thumbnail
Every World Editor tab now shows a hint when it’s empty
Prompt editor’s “Thinking” tab renamed to “Planning”
Re-generate no longer flashes the old narration
Smoother narration reveal

v2.0.2

Fixed

The opening turn of an old (1.2) save can now be rolled back and re-generated
Importing an old (1.2) save now upgrades it properly
More consistent turn summaries

v2.0.1

Added

Run a model locally — no endpoint needed (desktop)
AI image generation
Import tags from an image’s metadata
Authored image tags
Danbooru tag autocomplete
Editable tag chips
ComfyUI image provider
World README
Consent-based image optimization
Dictionaries are books
Dictionary library + lorebook import
Theme + theme color
Location background controls
AI Language is now a combobox
Back button in the enter-world flow
Bring characters into a world when you start it
Choose dictionaries when you start a world
Character cards — share a character as an image
Import SillyTavern characters
Sign in & publish from the desktop app
Selectable app font
Live theme preview
Cards stand out
Animated stat changes
“Move Automatically”
Narration reveal animation

Fixed

New World / Entity / Dictionary no longer leave a blank behind
Gameplay no longer edits your world
Re-generate & rollback work on imported v1.2 saves
Toasts follow the theme
Streaming narration reveal fixes

v2.0.0

Added

Standalone Windows app
Custom 3D avatars
In-app media player
Redesigned world browser (“Discover”)
AI output controls
Re-generate & rollback
Markdown narration
Token-based Context Window
Portrait / mobile layout
Lore Dictionary
Full per-turn AI context viewer
Stat-driven body sliders
Prompt variables are now chips
Entities are their own prompt section
Markdown formatting
Hide stat numbers from the narrator
Slash commands
Use Custom Endpoint
Hide-UI toggle
Update-aware world browser
World provenance on cards
Main-menu layout toggle
Markdown in world descriptions
In-game entity viewer
Entity popup
AI-context “current context only” filter
System Prompts editor
Organized Settings
Staged (director-led) thinking
Full-length, progressive TTS narration
Stream Narration Audio
Narration speed
Karaoke sentence highlighting
Frozen audio bar
Export the story
Audio settings live with the audio
Non-streaming narration generates before the rest of the turn
Memory Summaries
Link entities to locations from either side
Steadier World Editor tabs
Audience-labeled description fields
Planning step uses AI-Facing Summaries
Smarter next-action choices
AI-context “Hydrations” view
Duplicate button in the World Editor
Markdown toolbar for the world description
Trait groups (folders)

v1.1.11

Added Dictionary tab to WorldEditor, you can add trigger keywords + very long detailed descriptions that are not normally included in the AI prompt (to save on memory), only when the AI or your action text mentions the keyword!
Added world edit button in gameplay to allow you to edit the world you are playing
Corrected memory calculations
Fixed abort button breaking message history

v1.1.10

Added an informative memory usage bar
Increased default endpoint memory from 2000 to 3900
Fixed the token count logic to be much better at approximating tokens used

v1.1.9

– AI can now suggest changing locations

– World Editor Improvements:

– Added duplicate button to every item (entities, stats, traits, …)

– Can now set one or more locations as starting location

– If more than one location is a starting location, when player starts a new game the game picks randomly from only those places

v1.1.6-1.1.8

Dynamic Stat Logic: You can now write Javascript code to update a stat based on other stats! FULL GUIDE HERE

AI Notes

There is now a Notes panel in the left sidebar
Notes will persist for the entire game and get saved/loaded with the game saves
In the future, the AI might be able to update the notes, but not for now as that requires much more testing

Revamped Save Format

Resolved the exponentially growing save file issue
Old save format will be automatically converted when you load it with the new version

v1.1.5 Hot Fixes

– Fixed major bug where repeated edits of a world will fail to save

– Added abort button to stop generation early

– Added the ability to disable the choice generation and stat updates in settings(this speeds up by up to 3x because the game doesn’t update choices or stats)

– Added the ability to delete stat updates in the traits editor

v1.1.4

Storing and Editing Worlds

You can now edit and upload your own worlds into the game, the edited/uploaded worlds will be stored and persist across page reloads!

However, you should still down load backups of your worlds as your browser data could be reset.

Source Code Released

https://github.com/FieryLionite/formamorph

Bug Fixes and Improvements:

3D model parameters (belly size, breast size, fatness) can now exceed 100%, previously the 3D viewer used the 100% percentage which meant you could never exceed 100%, even if maximum belly size got increased to 1000.
In-game Location tab description showing the AI prompt instead of in-game description of the location
Removed file size limit of 5MB when uploading music or images in world editor
Load menu: move download save button to front, move upload save button outside scroll. Previously small phones couldn’t download save files

v1.1.0 – v1.1.3

Added quality TTS (only available on Chrome and Edge)
Added language selection
Improved responsiveness by 20x times! You now see narration text nearly instantly rather than waiting up to minutes for the AI to finish writing the entire response.
Removed the complicated JSON formatting, the AI can now respond in a much simpler format, this should greatly increase the success rate of parsing AI responses and allow you to use even regular role play AI models!
AI can now see player traits information and more accurate stats data (including current and max stat values along with stat descriptors)
- Note that the AI still cannot give you or remove traits
The Stats panel now show +5 or -2 in front of the stat names to indicate change
Added default setting to limit AI event to only one paragraph (this prevent AI from writing too much and going off-road, eating up precious memory tokens)
Added the ability to edit the AI responses and player stats
AI can modify the maximum value of stats
Fixed bugs:
- Entities list now work
- 3D character viewer often didn’t load the customization data

v1.0.3 Patch:

World Editor:
- Added option to toggle the 3D character model or not for that world
- Fixed major bug: Stat editor doesn’t show a stat min, max, or regen values
Added 2 new worlds: Valentine Survival and Reincarnated as a Drone

v1.0.2 Patch:

Error messages are now way more informative on what went wrong
Revamped the entire save load system to use IndexDB to avoid the 5mb localstorage limit
You can now download and upload save files
Reset AI settings now also reset the system prompt
Fixed bugs
- Game text showing nn instead of newlines
- Traits applied max stats incorrectly

v1.0.1

I sold a kidney to temporarily rent 2 more servers to match demand lmao why do I have to do this I’m poor as fuck

Also fixed some bugs and added a notice to follow the open router guide because its free to use the models there!

EDIT: Based on the logs it seems to be relatively stable now, no more dropped requests

v1.0.0

initial zone release

Developer Notes:

Hey there!

I’ve been hard at work creating updates for Formamorph dubbed v2.X. I’ve taken over the project from the previous developer and plan on continuing to ambitiously build on the project.

But… who am I? Where’s Fierylion??? Don’t worry, I’ve been working on Formamorph for a bit now in the background as the source was available and open for anyone to contribute. FieryLion was gracious enough to add me as a co-developer on this page after seeing all the new features I added. Which means now I can bring them to you! Huge shoutout to them as without their efforts to get the project up and running in the first place, none of this would be possible~