Breeders of the Nephelym Adult Game Download 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.​

Game Information


Release Date: 2020-09-07
Developer: DerelictHelmsman Patreon – Discord – Twitter – Wiki
Censored: No
Version: 0.760
OS: Windows x64 DX11 only
Language: English
Genre: 3DCG, 3D game, Adventure, Furry, Breeding, Animated, Character creation, Fantasy, Female protagonist, Furry, Male protagonist, Monster, Monster girl, Pregnancy, Vaginal sex, Futa/trans, Management, Titfuck, Oral sex, Sandbox

1- Extract to desired location.
2- Click on “BOTN.exe” to start playing.

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.
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.

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.

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

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
* Improved sharks, presets will need adjusted
* Fixed issues with vagrants and tentacles

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

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

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.
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.


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.

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

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

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

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

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

v0.751.1 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

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 behaviour

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)

v0.737 Alpha

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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Breeders of the Nephelyn Incest Patch
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    • You can make your own incest patcher by going to the game directory where the exe is, creating a text file and change the new document.text to imma.degenerate and that will re enable it.

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