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Unity Bound in Desire

Bound in Desire
Version: v0.40 Public Beta Developer: Kerni · Patreon · Blog · Itch.io Updated: 2025-12-29
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About this game

Bound in Desire is a full 3D third-person female protagonist adult game focused on erotic, kinky bondage adventures. You play Kyra, the new technical manager for the developing outpost planet Tau Centi 3. The job was supposed to be easy: oversee gynoids and androids. Then the AI gets distracted and starts redefining how humans should be bound and restrained.

Character creation, sci-fi setting, and a long bondage-focused tag list. One of the more focused-kink female MC adult games in the directory.

Installation
1. Extract and run.
Developer Notes
Features

Just like Milky Ways, a full 3D environment for the player to discover (this time in third-person perspective)

A lewd Main AI which really likes to see humans bound and restrained. (plus, vibrators)

Bondage and lewd devices you can build with the building device in the main base. You may build as much as you want, but be careful, you need resources for them.

The start of a way to kinky story.

Several outfits for the girls unlocked during the story or during exploration.

Several lewd toys the girls can wear on their body (will be expanded in later updates)

A free roaming mode during the game in which you can find new devices or play with the girls or see them play with the devices on their own or maybe with each other.

A simple inventory system to manage the kinky toys (WIP)

A simple character creator.

Some hints for first time players:

The game will take a long time to load up and maybe appear to be frozen. This is due to the massive amount of animations I created and all the assets which needs to be loaded in.

Controls:

W,A,S,D (the usual =P)

C - crouch

Tab - Inventory

M - Map and quests

Esc - Menu

Shift - slow walk/crouch

E - interact with NPC/toy/device/Machine

G - Ping for doable events

A few little tips:

(There is a Tips and Tricks file in the game folder, and some save files if you get stuck)

When you do not know where to go to, press M to call the map and then click on the next quest (right part of the screen)

Pressing Q in any event will make it almost skip through it (until a decision has to be made or the event ends)

Pressing G in free roaming mode shows you the doable events in the vicinity (look for a particle effect)

Running past the evil robots who want to restrain you is a valid tactic (I made the game not too hard; it should be fun not stressful)

In the inventory, there is a cheating module (if resources are missing)

Spa-gift cards for bondage massages and kinky things should respawn after a while. (A robot will deliver it to the same positions again)

(mac and Linux versions are untested and unsupported but, I compiled them nevertheless ^_^)

Changelog

Update
Change log : Version 0.40 (Public beta) - Added: About 200 VN frames (mostyl side quests) - Added: New machine to place (needs finishing of the attachment research side job quest) - Added: New Device in Milus Spa (also a new spa gift card somewhere around the map) - Added: Ability use the anal and vaginal dildo from the inventory (needs story progression) - Fixed: AI life bug (backend) - Fixed: Experimental AI life rewrite send protocol - Fixed: Camera should not hang that often anymore (hopefully) - Fixed: Other small things in the story file i forgot about Change log : Version 0.39 (closed beta) - Added: About 200 VN frames to the main story - Added: Simple massage in Milus spa has new event (needs story progression) - Fixed: A bug that prevented the restraints to be detached properly - Fixed: Position of the transport box of Luca Change log : Version 0.38 (closed alpha) - Added: Ability to add the -strap on- to the other girls - Added: The ice cream cart can now be used by Kyra (repeatable event) (the one on the lookout thingy) - Added: Kyra can now ask the other girls to put restraints on her - Added: New NPC AI live events when the -strap on- is equipped - Added: New submissive events when the other girl has the -strap on- equipped. - Added: New generic events when the other girl has the -strap on- equipped. - Added: A new simple dress to find in the new warehouse (nothing fancy) - Added: Gynoid Jintsuu, Naka, Sendai and Mitzuki are now wearing clothes - Fixed: Event randomizer for generic events should work correctly now Change log : Version 0.37 (closed alpha) - Added: About 200 VN frames to the main story - Added: Enemy gynoids will may choose to guide Kyra back to her base with a rope insteadt of the hover thingy. - Fixed: Carry rail system quest could be started , even though Luca was currently not in the base. - Fixed: Hair should not change color to white when starting a new game and loading a save file from this new game. - Fixed: Double use of the buildable milking machine is now fixed (two girls at the same time , glitching into each other) - Fixed: A bug which prevented several float values to be read from a save game - Fixed: Small fixes to the AI live rewrite feature
v0.36
Public Beta - Added: About 400 VN frames for the main story - Added: new clothing set (needs story progression) - Added: Several naughty and kinky devices (Currently used in main story line) - Fixed: A bug that would "jump" in the save game menu when clicking "next page" - Fixed: The float point parsing should be really really region free now. Change log : Version 0.35 (closed beta) - Added: several new side options (goes along with the main story and Milu) - Added: About 400 VN frames for the main story - Added: Option to toggle between UI modes -Scale With Screen Size- and -Constant Pixel Size- - Added: Remote control for Ivy and Alexia to control their toys in free roaming mode (needs story progression) - Fixed: Several story inconsistencies and errors pointed out on my discord Change log : Version 0.34 (closed alpha) - Added: 7 submissive mini events for Kyra (submissive towards Ivy/alexia and Luca) - Added: About 200 VN frames for the submissive mini events with Kyra - Added: some AI events for the girls and their needs (AI live events) - Added: Experimental AI rewrite and talk to feature (read documentation in game folder, please) - Fixed: Some clothes were not loaded dynamically (they had static references in the scene) Change log : Version 0.33 (closed alpha) - Added: 300 VN frames for more options with the girls in lucas base - Added: New toy with spheres on a string (ask Luca after attachment resource dep. story) - Added: Generic events with Ivy and Alexia for the spheres on a string (and self events) - Fixed: Several clothing items could not undress specific parts (Bikini suit , for example) - Fixed: Noris repeatable quest was still in the questlog after finishing it - Fixed: Ambient sounds now turn down when entering a VN event
v0.32
(open beta) - Added: Over 500 vn frames for the main story and the generic events - Added: Several shoes , exchanged many shoes for several outfits - Added: Several bondage items now useable for the girls - Added: The box.. useable only with the long dong on Kyras hips - Fixed: Colliders in the attachment research department building.
v0.31
(closed beta) - Added: About 400 vn frames for the main story. - Added: One more clothing item for later use - Fixed: Several small issues with the backbone (my own framework)
v0.30
(closed alpha) - Added: Several new devices currently only used in the story - Added: A feature that will make the girl aroused when her lower "pleasure centers" are occupied when running walking in third person mode - Added: About 300 vn frames for the main story. - Fixed: Hogtie hanger event with Norio and Ivy should trigger properly now - Fixed: event before hogtie hanger shoul not be able to start twice now. - Fixed: several small things in the framework
v0.29
- Added: two new clothign sets (currently only implemented but not integrated into the story) - Added: several new animations and devices - Added: About 300 vn frames for the main story. - Fixed: Minimap and inventory will close when VN event is triggered (cought by android for example) - Fixed: several small things in the framework

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