discussion [Unreal Engine] Breeders of the Nephelym [v0.762.1 Early] [DerelictHelmsman]

[Storge]

Allow others to update?

1. yes

Developer Name

DerelictHelmsman

Developer Links

Discord - Patreon - Twitter - SubscribeStar - Steam - Wiki

Version

0.762.1 Early

Latest Update

Dec 16, 2025

Release Date

Dec 15, 2025

Language

English

OS

1. Windows

Overview:
Breeders of the Nephelym is an immersive, beautifully erotic 3D adventure game centered around catching and breeding the Nephelym, an enigmatic race of monster-human hybrids.​

Spoiler: Genre

3d game, 3dcg, adventure, animated, big ass, big tits, character creation, creampie, fantasy, female domination, female protagonist, furry, futa/trans, futa/trans protagonist, handjob, harem, incest, lactation, lesbian, male protagonist, management, monster, monster girl, oral sex, pregnancy, religion, sandbox, tentacles, titfuck, trainer, twins, vaginal sex

Spoiler: Installation

Extract and run

Spoiler: Change-Log

v0.762.1

• Added: It’s now possible for the breeder to acquire traits
• Added: New food items that grant traits to the breeder or wild nephelym
• Added: Recipe scavenger hunt
• Added: Bryn, the giant ogre chef and food merchant
• Added: Envy, the fourth sexy sin and consumer of traits
• Changed: Trait buttons in the character creator are now functional for breeders
• Changed: Lowered prices of clothing items
• Changed: Updated the game and engine to use Windows SDK 10.0.19041
• Changed: Going forward the game will use a simple integer versioning scheme
• Removed: Breeder presets aside from the default, as those are entirely up to you
• Removed: Music, temporarily, until I can find something better

v0.761.13
* Fixed: Vagrant-related crashes (36f8).
(When turning in a Vagrant Neph to complete a quest, the Neph would remain as a Vagrant on the Homestead. The crash would happen randomly afterwards, either when: leaving and then returning to the Homestead, breeding in the Breeding Yard, the 'ghost Vagrant' initiating sex with another Vagrant, the 'ghost Vagrant' climaxing, etc.)

v0.761.12 Public
HotFix

v0.761.11 Steam
* Added Breeder's Log -- a record of relevant messages, accessed in the menu
* Added more graphics options
* Optimized the Lovense system, Mobile (Automatic) was removed
* Fixed many bugs and issues, including multiple body traits on wild Nephelym

v0.761.9
* Added Breeder's Log -- a record of relevant messages, accessed in the menu
* Added more graphics options
* Optimized the Lovense system, Mobile (Automatic) was removed
* Fixed many bugs and issues, including multiple body traits on wild Nephelym

v0.761.7

• Added Breeder's Log -- a record of relevant messages, accessed in the menu
• Added more graphics options
• Optimized the Lovense system, Mobile (Automatic) was removed
• Fixed many bugs and issues, including multiple body traits on wild Nephelym

v0.761.6
* New WIP water system with dynamic splashing and caustics (ocean unaffected, it will require its own system)
* Celeste can now be the daily toy
* Added sex scenes with Celeste
* Added sex scenes with Yasmine (finally)
* Fixed issues with blessed scenes in the gallery
* Moved to a more efficient way of specifying fluid FX for sex scenes. This is mostly under the hood, but it makes it easier for me to manage. It is a tedious WIP, so expect issues. Every scene will be complete before the next public build.
* Fixed issues with fur jitter
* Fixed daily toy issues
* Added new setting to allow vagrants to initiate sex with the breeder

v0.761.59
* New WIP water system with dynamic splashing and caustics (ocean unaffected, it will require its own system)
* Celeste can now be the daily toy
* Added sex scenes with Celeste
* Added sex scenes with Yasmine (finally)
* Fixed issues with blessed scenes in the gallery
* Moved to a more efficient way of specifying fluid FX for sex scenes. This is mostly under the hood, but it makes it easier for me to manage. It is a tedious WIP, so expect issues. Every scene will be complete before the next public build.
* Fixed issues with fur jitter
* Fixed daily toy issues
* Added new setting to allow vagrants to initiate sex with the breeder

v0.761.53

• First pass on the clothing system
• Added new blessed clothing merchant: Celeste
• Clothing color is again exposed in the creator
• Added support for randomized dialogue
• Improved dialogue system, escape now works properly
• Switched all GameplayTags to native; performance increase
• Fixed various bugs and issues

v0.761.52
- Added new breeder menu
- Fixed many bugs, including breeder rank increasing and gallery crashing

v0.761.5
The focus of this build is a completely redesigned gallery that includes the following features:
* View breeding scenes with any breedable variant.
* View harvest scenes with any breedable variant.
* View wild sex scenes with any breedable variant.
* View blessed scenes with any medium sized breedable variant
* Load character presets before any scene
* Assign any appearance trait before any scene

v0.761.4

• Added: Essence requirements in the barn UI
• Added: New dialogue for Emissary that explains Essence
• Added: Dialogue options are now categorized where needed to provide more space
• Fixed: Many bugs introduced in the last build

v0.761

• Added: Essence requirements in the barn UI
• Added: New dialogue for Emissary that explains Essence
• Added: Dialogue options are now categorized where needed to provide more space
• Fixed: Many bugs introduced in the last build

Release Notes: 0.760.97
Progress on fixing gameplay mechanics continues.
* World Level replaced with Essence
* Overhauled the way wild ones spawn, returning the focus to breeding
* Added new traits
* Added dormant trait mechanic
* Various UI tweaks
* Fixed bugs and crashes

Release Notes: 0.760.95
Progress on fixing gameplay mechanics continues.
* World Level replaced with Essence
* Overhauled the way wild ones spawn, returning the focus to breeding
* Added new traits
* Added dormant trait mechanic
* Various UI tweaks
* Fixed bugs and crashes

Release Notes: 0.760.89
Please test this build without using cheats to provide feedback for the new mechanics.

• Reworked stats, traits, and game mechanics
• Appearance traits now scale by rank
• Added new Vagrant Pregnancy option (off by default)
• Added capacity to the barn UI
• Fixed crashes and bugs from the previous build

Hotfix

• Balanced quest rewards
• Fixed Sterile trait

Hotfix Notes (0.760.6)
Issues fixed:
* Male breeder presets showing female/futa presets instead
* Filtering by race and sex at the same time is wonky
* Sell item count is not reset after trading
* Nephelym Ascension menu locks after ascending the last one, ascend button visible when it shouldn't be
* Race is now shown per task on the quest menu
* Possible fix for long standing crashes that existed before the UI overhaul
Hotfix Notes (0.760.5)
Issues fixed:
* Restored Skin Fade
Issues Still to Fix:
* Breeding task bugs
* Store item quantity bug
Spoiler: Release Notes: 0.760.3

v0.760
UI

• Completely rewritten/redesigned to be more game friendly.
• There is now a dedicated inventory and quest menu.
• A command prompt can be summoned at anytime with the ~ key.
• More sophisticated filtering will only show content that's relevant.
• The UI can be completely toggled on/off at anytime with the H key.

Game

• Fluids are now items, and no longer measured in ml.
• Breeding tasks are now logged in a menu, and can be completed there.
• Keystones and quest items are now proper items stored in the inventory.
• Condensed stats down to lore friendly Lust, Fertility, and Aptitude.
• The concept of time/date no longer exists, there is just day and night cycling for eternity.

Character Editor

• All creation now takes place in a dedicated environment.
• Changes are preserved when changing from female to futa or futa to female.
• Clothing color changes are no longer possible (this is to prepare for a proper clothing system coming soon).

Work in Progress

• Gallery, a new one is being built that will support every sex scene, not just breeding scenes.
• Body fluid material customization, stored per character preset.
• Clothing system, with a vendor and proper outfit equip system.
• A breeder menu, related to the above clothing system.
• A ranch management menu.
• Controller support.

v0.756.9
Since I have started working on a rewrite/redesign of the UI, I decided to quickly release the current build to the public.

The UI redesign is something I have been putting off for years, and it has started to interfere with development. Not to mention, the UI has been the target for complaints from players. The new design will make the game much less annoying, as well as open up development opportunities for me.

v0.756.8
I have been working on improving physics, and decided to release a WIP build to get some feedback. Saves were wiped in this build to fix some crashing bugs and reset physics data.
* Added dick physics, and the ability to control it via presets
* Preset physics settings now work properly
* Editing the breeder's physics now takes effect immediately
* Tweaked engine physics settings for smoother simulations
* Fixed crashes involved with pregnancy and auto saving

v0.756.1
Moving to Unreal Engine 5 turned out to not be worth the sacrifice and development efforts. I may change my mind on this in the future, but for now I have decided to focus on adding content and optimizing the game in UE 4.27.

This build was dedicated to adding Lovense sex toy support, this is a first test before the next build which will be public.

• Added: Lovense sex toy support
• Added: Empathy system for sex toys
• Added: Pawsmaati overhaul, sex positions now earned per zone
• Added: Music (see credits below)
• Added: New Bovaur variant: Mare
• Added: New hybrid: Unicorn
• Added: Dick sucking animations for tentacles
• Fixed: Breasts don't animate during milk harvesting
• Fixed: Particles not working during some harvesting scenes
• Fixed: Various other issues
• Updated: Translations
• Updated: Ancient Stone of Glory
• Hotfix: Crash when breeding mares
• Hotfix: Bunny spawns overridden by bovaur
• Hotfix: Volume settings not stored properly

v0.755.4A
* Improved sharks, presets will need adjusted
* Fixed issues with vagrants and tentacles

v0.755.3a
* Exposed more sex scenes to roamers and vagrants
* Fixed: Surabhi does not yield semen during harvesting

v0.755.2
While working on recovery and moving, I have managed to make another build. It's been a difficult few months to say the least. Now that I have finished moving, I will continue trying to release builds as I can.

New in this build are vagrants, roamers for the ranch essentially. One can be set per barn. They can be interacted with in much the same way as wild roamers, but they won't surprise you.

Added: Vagrant system
Tweaked: Tasks will now accept any trait rank
Fixed: Graphical bugs around the town fountain
Upgrade engine version to latest hotfix
Hotfix

Fixed: Vagrant issues
Fixed: Desire preference assignment

v0.754.3

• Pregnancy now takes 3 days
• Fixed tooltips
• Updated translations
• Updated Ancient Stone of Glory

v0.754.2A
Hotfix 2

• Fixed: Crashes in gallery.
• Balanced: level ranges, slower until level 6, then the rate increases.
• Tweaked: world values, higher level Nephelym have more value.
• New traits, Wild and Domestic.
• Release bonus for Nephelym born at barn and/or pregnant.
• World Level Ranges changed, according to value changes.
• Higher rarities nerfed as trait count, to make breeding more important.
• Fixed: Issues with trait passing.

v0.754.1

• Fixed: World Level does not raise when releasing offspring from breeding yard.
• Fixed: Wild sex cheat breaks wild sex.
• Added: World Level/Progress now shown in barns and zones.
• Fixed: Trait assignment issues for roamers.
• Fixed: Blow jobs still used random winning conditions.

v0.754A
Here is a brief overview of the new system:

• Stats are now ranked E-S.
• Stat ranks cannot be leveled with breeding. Player needs to catch better wild Nephelym with better ranks.
• Stats can rise by both leveling and breeding.
• Rarity has been introduced, which affects stats, ranks, and traits.
• Presets can now be restricted to rarities, so you can have legendary schemes.
• Loyalty has been replaced with Excitement.
• Excitement will decrease if no actions are performed per day. With enough excitement, stat gain from breeding and max lust is increased.
• Most traits have been completely changed. See the tooltips for information.
• Some traits are ranked: Bronze, Silver, Gold.
• Removed traits that did not fit the lore and theme of the game: Abomination, Grungy, Gaudy, Sadistic (now Efficient).
• Females now have access to exclusive Motherly trait for balance.
• Releasing Nephelym now has purpose: it will increase the World Level for that race.
• World Level governs the rarity of roamers.
• Surprise Sex is now Wild Sex, gone is the need to repeatedly click. Rather, there is an automatic stat comparison that takes place.
• Nephelym you house at the ranch will develop preferences for positions, variants, body types, and specific other mates.
• Preferences are ranked: Enjoy, Like, Love, Worship.

v0.753.7a

• Fluids are now displayed at each barn
• Q hotkey can be used for quick actions at barns and breeding yards
• Nephelym lists are now sorted alphabetically
• Details are displayed by default when interacting with roamers
• Project renamed from Radiant to OBF (this will make sense later)
• Copy and paste added for faces in creator mode
• Fixed Mega Slime's dialogue

v0.753.6A

• Added surprise in Hedon Township
• Futa breeders can now engage in sex with blessed ones as a female
• Fixed various issues

v0.753.5A
This new surprise involves select blessed nephelym, one is selected each day for a kinky game. A few blessed ones are available at first, but as you go through the game progression, more will be unlocked.

• Added surprise in Hedon Township
• Futa breeders can now engage in sex with blessed ones as a female
• Fixed various issues

v0.753.2A
Progress on adding new erotic content is going well. For the next build, FxF surprise sex and tentacle scenes for futas and males will be added.

• Added remaining spontaneous blow job scenes
• Added ability to engage in loving blow jobs at barns
• You can now choose how to engage in surprise sex
• Fixed issues with tentacles
• Fixed various issues

v0.753 Alpha

• New motion animations for males
• Physics should be more stable during transitions
• Fixed issues introduced in recent builds
• Updated translations
• Updated the Ancient Stone of Glory

v0.752.5 Alpha

• Revamped cowgirl sex positions
• Added all size pairs for cowgirl and reverse cowgirl
• Fixed various issues

v0.752.4
Progress is good on revamping the sex scenes. I may or may not take a break and work on the tentacle sex system in one of the near future builds.

• Revamped missionary sex position
• Added all size pairs for missionary
• Added hybrid for minotaur + dragon (surabhi)
• Added hybrid for minotaur + titan (kujata)
• Improved body point accuracy (used for hand IK during sex scenes)
• Fixed various issues

v0.752.3 Alpha

• Revamped butterfly position
• Added all size pairs for butterfly
• Easter surprise
• Fixed various small issues
• Removed incest at the request of Patreon

v0.752 Alpha
For the next few builds, I will be improving and adding size pairs to the breeding scenes. For this build, doggy was the focus.

• Revamped doggy position
• Added all size pairs for doggy
• Fixed various issues

v0.751.1 Alpha
You can now edit the breeder's appearance after starting a game
Spontaneous BJ can now be selected (SS is used for missing scenes)

• Added new minotaur variant for bovaur race
• Added setting for offspring generation
• Fixed issues with blow jobs
• Fixed spirit form editing not showing current form
• Fixed Leylanna's spirit form dialogue and crash

0.750.7
Spoiler
v0.750.5 Alpha
Fixed crash with pregnancy disabled

v0.750.1 Alpha
Hotfix

v0.750 Alpha

• Offspring are now blended from parents' color schemes
• Small chance to get twins, they will have the Gemini trait
• Female and futa breeders might now get pregnant from surprise sex
• Pregnant belly now smoothly interpolates exactly 5 days from conception
• Propagate preset tool no longer affects attachment indices
• Incest can now be switched off as a fetish
• Fixed various issues

v0.749.5 Alpha

• Pregnant shape can now be modified like a trait per preset
• Added Propagate Preset shape function
• Expanded copy and paste to work with material and/or shape
• Replaced trait drop down list with check boxes
• Fixed more bugs and wonky behavior

v0.749 Alpha

• This build was dedicated to upgrading presets to allow for the modification of trait shapes. Body Composition has been removed in favor of giving preset creators full control over the shape.
• Added the ability to edit trait shapes per preset
• Restored and upgraded default presets
• Fixed various issues from the last build, a few more remain still

0.748.1 Alpha

• Implemented a proper loading screen
• Switched to asynchronous asset loading on startup (should fix black screen)
• Fixed fur flickering and rendering issues
• Fixed roamers moving during surprise sex
• Cum inflation and fluid FX now work on roamers
• Cum inflation works on the breeder during blessed scenes
• Improved head tracking
• Improved blow job mouth penetration
• Upgrade to latest engine version
• Unified physics using the engine's new system, all characters now have physics
• Unified all sex scene code, no more separate paths for breeding, blessed, etc.
• Fixed other various crashes and small bugs

v0.747 Alpha
Thank you for your patience while I implemented the first pass on game progression. A lot of work went into this, and players coming from the last public build will find many new blessed ones with unique sex scenes.

This is not the end of the game progression, but starting with 0.748 I will return to the breeding and surprise sex systems.

v0.746 Alpha

• Added Orc Chieftain progression
• Fixed some small issues
• Downgraded MSVC compiler version to what Epic uses, might fix some weird behavior.

v0.745 Alpha

• Added Sultry Plateau progression gate
• Fixed dialogue lock when futa is disabled

v0.744 Alpha

• Added Moaning Crag gate progression

v0.743 Alpha

• Added Amorous Hallows gate progression

v0.742 Alpha

• Added Climax Peak gate progression
• Fixed task generation for female breeders with futa disabled

v0.741 Apha

• Added Cove of Rapture gate progression
• Male breeding tasks are no longer generated when futa only is on

v0.740 Alpha

• Added Hivelands gate game progression
• Updated translations

v0.739 Alpha

This is more of a trial build than anything else. I tweaked the game design, and want feedback before going forward.

The intro quest was removed in favor of a simpler system. Collect keystones to open Cockblock Gates. Keystones are acquired from blessed ones by doing breeding requests or simple puzzles.

Note: only two are implemented in this build, so many areas are open by default. Once I get some feedback, I will continue implementing the rest of them.

v0.738 Alpha

• Added game progression 1
• The Avatars of the Goddess must be activated, the NPCs will guide you
• Fixed issues
• Updated translations

Special thanks to translators:

• CellarCat (Korean)
• MAYDAYMAY1 (Chinese)
• taVee (Thai)
• frost 90909090 (Portuguese)
• Bruffit (Russian)
• J0a0n (Czech)
• Powerack (Czech)
• RubyRZND (Spanish)

Spoiler: Codes

Just press ` to open up console for entering the codes

add money - Add 1,000,000 Orgasium
add favor - Add 1,000 Favor
enable spirit form - Enables spirit form
max all fluids - gives 2000 ml of all semen and 4000 ml of all milk
all barns - Unlock all habitats on your farm
infinite lust - Infinite lust for everyone (activate when at full lust)
infinite spirit - Infinite spirit for spirit form
win wild sex - Always win wild sex
reset wild sex - restores wild sex chances to default
all sex positions - Unlock all sex positions
imma lazy sack - Unlock all cockblock gates and locations
remove cheats - deactivates certain cheats
always reproduce - Breeding sessions always yield an offspring
reset reproduce - Set offspring chances back to default
go home - teleports back to the homestead
set world level # - Sets all world levels to specified level (1, 2, 3, 4 or 5 in place of #; may or may not work)

5vg6dbEwqEk9 - Creator Code (only works on Main Menu, not while in-game)

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Incest

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[Storge]

Breeders of the Nephelym (BOTN) Incest Patcher

THE PATCHER IS NOT NEEDED ANYMORE

You can easily enable incest in the game as shown below:


OVERVIEW:

A file named imma.degenerate needs to be in the same folder as OBF.exe.

• It does not need to contain anything.
• It must be the same folder as OBF.exe.
• The filename is imma and the extension is degenerate.

It doesn't matter what creates the file, it should work as long as the filename/extension is correct.

METHOD 1:
In the folder where OBF.exe is located, create a file called imma.degenerate (be sure to enable show file extensions if you're using Windows explorer). The file does not need to contain anything.

METHOD 2:
Command Prompt:
In the folder where OBF.exe is located, type echo. > imma.degenerate and you'll be all set.

Command Prompt (PowerShell) :
In the folder where OBF.exe is located, type New-Item -Path . -Name "imma.degenerate" -ItemType "file" and you'll be all set.

I'm not sure how long this will work and I think it would be best for all of us to not mention it on Patreon (or DH's Discord) especially.

This works with the Steam version as well but if your Steam library is in Program Files, you'll need administrative rights to create the file on Windows 10. Please follow the Steam instructions below if you need help.

STEAM:
For Steam, this gets a bit more complex because of the higher security present in Program Files.

• Open a "Command Prompt" or "Command Prompt (Powershell)", you'll need to run either as Administrator. (NOTE: Windows Terminal generally won't let you start an Administrator session).
• Depending on your settings, you'll may get a elevation prompt. Accept it to continue.
• The following step assumes the default location for the game folder. If your Steam library is installed somewhere else you'll need to use the correct path: pushd "%SystemDrive%\Program Files (x86)\Steam\steamapps\common\Breeders of the Nephelym Alpha" (Powershell: cd "$Env:SystemDrive\Program Files (x86))\Steam\steamapps\common\Breeders of the Nephelym Alpha")
• Now you just need to create the file: echo. > imma.degenerate (Powershell: New-Item -Path . -Name "imma.degenerate" -ItemType "file")
• Close the command window/powershell: exit

The patcher will eventually return with support for this for a few reasons:

• There's no telling how long this will work and we may be back to patching soon.
• If people use a patcher for something so simple it may help hide this from Patreon from that much longer.
• Some users may just find it it easier. Obviously if it's using the file method, it will not actually be doing any patching at all. Just creating (or removing) a file as directed.
• The patcher is, unfortunately, not my highest priority at the moment.

 

[Kernist]

Game is free on Steam btw, at least for now.

 

[Storge]

Game is free on Steam btw, at least for now.

Only Public versions are free on Steam

 

[Kernist]

Only Public versions are free on Steam

you are right, but the thread's title says it's public version, if it's not can you maybe edit it? If premium version is uploaded I got bamboozled.

 

[misterfluffums]

Wow, awesome! I thought they abandoned the game, great to see it's getting updates.

 

[Storge]

anyone know where to find the Swift trait recipe?

 

[Sharpened]

How much content does this game have atm? I’ve been holding off on trying it out until it’s got a decent amount of content.

 

[Storge]

How much content does this game have atm? I’ve been holding off on trying it out until it’s got a decent amount of content.

content is decent amount, that much I can say, but the features are limited in the game.
Also, the development progress is very slow!

 

[wedomore]

Is there a walkthrough or manual for this anywhere? I tried it out a few minutes, but like wtf do you do and suck!!!

 

[lolteambleach1]

Man, I wish the dev wasn't such a pussy when it comes to gay/futa content.

 

[namelessnoone]

Cant get imma.degenerate to work?

 

[lharak]

The atmosphere in this game is very well done.

 

[Iateyourdragon]

Cant get imma.degenerate to work?

Open Powershell
Type New-Item -Path . -Name "imma.degenerate" -ItemType "file"

Replace "-Path" with the file address (you can copy the file address by right clicking the address bar at the top)
Execute the command and it should create a DEGENERATE file called imma.degenerate

Hope this helps

 

[kaien13]

Thanks for sharing, best of luck!