Enter an immersive beautifully erotic 3D adventure centered around catching and breeding the Nephelym, an enigmatic race of monster-human hybrids with an overwhelming desire to mate.
Recent Reviews:
Very Positive (91) - 84% of the 91 user reviews in the last 30 days are positive.
All Reviews:
Very Positive (9,518) - 90% of the 9,518 user reviews for this game are positive.
Release Date:
Oct 18, 2019
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Early Access Game

Get instant access and start playing; get involved with this game as it develops.

Note: This Early Access game is not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“I am a single developer that wants you to experience a high quality erotic game as it takes form. My release cycle is focused on small, but rapid incremental builds that are shaped by your feedback.

I am looking to broaden the player base in order to gain greater feedback and exposure.”

Approximately how long will this game be in Early Access?

“My estimate is no longer than 2 years.”

How is the full version planned to differ from the Early Access version?

“The final version will be stable and ready to function as a complete game.

More content in the form of sex scenes and characters will be added, as well as filling in the empty areas around the world.”

What is the current state of the Early Access version?

“Playable in a sandbox adventure style. There are many characters to interact with and a large detailed world to explore. The breeding and capturing systems are completely functional, with improvements coming in every build.”

Will the game be priced differently during and after Early Access?

“The game will remain free to play during the alpha phase, after which it will exit Early Access. Upon launch, a price will be named, but any updates post-launch will be free.

There will never be any paid DLC.

How are you planning on involving the Community in your development process?

“Players can experience the game for free as it develops in alpha. As a solo developer, the varying perspectives of the player base are invaluable. I will implement highly requested features that are inline with the game's design.

Community feedback has already helped shaped the game, and will continue to throughout the development process.”
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Play Breeders of the Nephelym: Alpha

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Mature Content Description

The developers describe the content like this:

This game contains full body nudity, erotic dialogue, and consensual sex acts for the purpose of reproduction and pleasure.

All characters are 18+.

About This Game

Enter an immersive beautifully erotic 3D adventure centered around catching and breeding the Nephelym, an enigmatic race of monster-human hybrids with an overwhelming desire to mate.

Hentai First: Breeding System

This game never forgets that its primary objective is to present you with highly erotic pleasing material. It's a hentai game first, and an adventure game second. On that note, every Nephelym breeding combination will have its own two-phase (penetration and climax) sex animation. You can control when the climax happens.
There are a large variety of Nephelym, ranging from ripped and fit to fat and well-curved. All have been given "interesting" genitalia to make for unique breeding animations. There are currently a few known species, but more are certain to be discovered.

Lastly, any true breeder knows that to master the craft you need to "experience" your Nephelym for yourself. At any point you can breed with any of your Nephelym.

If you're feeling compassionate, you can give your love to a lustful blessed Nephelym and allow them to release their desires, or they might surprise you instead.

Ultimate Sex Adventure

As the only one from the mythical human race, you can leverage this to become a Nephelym breeder. Catch wild Nephelym, breed them to produce offspring, and uncover satisfying sexual experiences with blessed Nephelym across the world.

In addition to sex, you will find a deep lore and story behind this beautiful, but mysterious world.

Dynamic Characters

Written from the ground up to be dynamic and editable in realtime, each character can change shape, color, details, and attachments on the fly. All while sharing the same rig and animations.

Not only does this allow for robust custom breeder creation, but it also opens up many possibilities for changing the shape of Nephelym through gameplay. For example, Nephelym can be fed certain items to make them fatter or more fit depending on your taste, this will visually change their bodies and alter their stats.


There are no loading screens at all, no annoying cutscenes, and the camera was programmed from the ground up to be a seamless smooth transition between every mode. Features were added to increase control over your breeder--you can at any time remove all or particular pieces of clothing. You have control over the different phases of any sex scene, and complete freedom with camera movement and speed.

To further immersion, graphical beauty is a priority. Lighting is high quality and lots of foliage is used with many characters having dynamic realtime fur.

System Requirements

    • Requires a 64-bit processor and operating system
    • OS *: Windows 7
    • Processor: AMD® FX-6300 / Intel® Core i3-2100
    • Memory: 4 GB RAM
    • Graphics: AMD® Radeon HD 7950 / NVIDIA® GTX 750 Ti
    • DirectX: Version 11
    • Storage: 8 GB available space
    • Additional Notes: Shader Model 5 GPU, 64-bit only
    • Requires a 64-bit processor and operating system
    • OS: Windows 10
    • Processor: AMD® Ryzen 7 1700+ / Intel® Core i7-3770+
    • Memory: 16 GB RAM
    • Graphics: AMD® Vega 64+ / NVIDIA® GTX 1080 Ti+
    • DirectX: Version 11
    • Storage: 16 GB available space
    • Additional Notes: Shader Model 5+ GPU, 64-bit only
* Starting January 1st, 2024, the Steam Client will only support Windows 10 and later versions.

What Curators Say

124 Curators have reviewed this product. Click here to see them.

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