Monster Girl Factory

by Quiet Crucible

3.9 (9 votes)

Unreal Engine v0.4.1

Game Details

Version: v0.4.1
Developer: Quiet Crucible
Engine: Unreal Engine
Status: Ongoing
OS
Language: English
Censored: No
Updated: 22 May 2026

About

Cards go on a 6×6 board here, not weapons: Producers make resources, Storers stockpile them, Converters turn one into another, and Buff creatures unlock bonuses when their rotatable sides line up with neighbors. It's a calm, incremental thing, more about optimizing a layout than reacting to anything.

You start with a handful of monster girls and keep rearranging them as production scales up, socketing gems for permanent upgrades, summoning short-lived Echo Orbs for bursts of output, and trading with a Merchant who grows alongside you. Upgrading a monster girl far enough gets you her full Lewd version, and the whole board keeps getting more automated the longer you leave it running. The actual goal is filling out the bestiary and collecting every girl's complete art, which means the puzzle of the board matters as much as anything else on the page.

Changelog

v0.4.1

2026-05-23
quick hotfix to make old saves work with the new Request feature

v0.4

2026-05-23
Final content update before Full Version release!
no longer releasing a Linux build - Steam's compatibility tool works better.
note: cap for the demo is still tier 8
features:
new converters
Witch: doubles chance to get echo orbs and auto-collects them
Dragon: buffs adjacent storage girls
Honeypot: makes the merchant visit more often
new tier 7 buffer
new request system
submit excess items and receive mastery points!
new mastery system
spend mastery points to get upgrades like item crit chance and bigger echo orbs!
you can now reroll resonances from the details menu and while the girl is on the board
new gems for buffers
new music
new sfx
you can now move the gem bag
you can now disable item converting on a card
mute item crit option in settings
mute item pickup option in settings
instant item pickup option in settings
changes:
auto unsocket gem when removing creature from board
moved gem sockets and made them slightly bigger
details menu now also shows gem info
merchant timer is now visible
increased difficulty to level up merchant
increased echo cost of permanent upgrade
added notifications dots + animation when permanent upgrade is available
reduced chance for high-rarity echo orbs
added hotkeys to toggle menus
item list is now collapsible and is sorted
buffed buffers' storage buff
added bag button
monster girl menu is now sorted by tier
item list is now sorted by tier
user settings should now apply more permanently
touched up art for:
Clothling
Loom-Bearer
Weavebound
gem slots
new monster girl type icons
bugfixes:
you can now buy gems with a single click
visual bug when swapping gems in the girl menu
fixed resonance connection visual bugs

v0.3.2

2026-05-09
New Feature:
Reroll resonances for a small Echo cost.
New Menus in the main menu:
Gallery for convenient viewing of every art you've unlocked.
Tutorial Menu
Stats menu where you can check your total completion progress
Settings for FPS limit, window mode, resolution, and volume
Changes:
Reduced chance for Echo orb to appear.
Final upgrade for a girl is now available immediately upon upgrading to 3 stars.
A Monster Girl's art becomes available for imprinting onto other girls upon reaching 3 stars.
Bugfixes:
Fixed producer girls unintentionally receiving a storage upgrade when unlocking their final universal upgrade.
New SFX (merchant, orbs, etc) are now correctly affected by volume settings
Cleaned up Unreal Engine bloat that was slowing down the game (file size is now smaller as a bonus)
New "compiling" message shows when first booting up the game in an attempt to explain first-launch CPU usage.

v0.3.1

2026-05-01
Hotfix
Fixed main menu showing wrong version number (if you have v0.3 already no need to update!)

v0.3

2026-05-01
Content Update
WARNING: only compatible with v0.2 or newer saves!
Gems and Gem Socketing: Collect beautiful Gems and socket them into your creatures for permanent stat boosts! Different gem colors and rarities offer unique bonuses that stack beautifully with your other upgrades.
Echo Orbs: These shimmering orbs appear on the board and give lots of echo if caught… but they fade quickly!
The Merchant Arrives: A charming new Merchant will sometimes pop in to say hello. She sells rare Gems and Upgrade Vouchers using your hard-earned Echo!
Merchant Leveling & Secrets: Build a relationship with the Merchant by trading with her and she'll reward you
Added sound effects
Fixed some bugs
Improved visuals
Fixed Linux memory leak