Breeders of the Nephelym

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.

Released Oct 18, 2019 Developer DerelictHelmsman Platforms Windows

View on Steam ↗ Free (US · as of 2026-09-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-26.

89.4%positive10,243 reviews

Recommended · 18 found this helpful

“Streamed on Twitch. Got banned in 40 minutes. 99/10 Would hump again.”

— a player, Steam review · 18 hrs played

Recommended · 19 found this helpful

“While the game is currently in an update drought, it is a playable, moderately fun game - depending on what you consider fun. First: The sex scenes. They are... okay. The female characters have a wide range of body types, so everyone can find one they like (or breed them all to…”

— a player, Steam review · 30 hrs played

Recommended · 10 found this helpful

“This game is awesome. You play as a human who lands on a planet full of horny furries that all want to breed, preferably with you. There are tons of different races and species, and the breeding system is really cool. You can create crossbreeds, and there are visible changes…”

— a player, Steam review · 1 hrs played

Player activity

Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-08 via SteamCharts.

2,677all-time peak

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Jun 13, 2025
Public Build: 0.761.7

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, includin

Feb 12, 2024
Public Build: 0.761

It's been awhile. The game is not dead, but development has slowed due to some real life issues. Added: Essence requirements in the barn UI Added: New dialogue for Emissary that explains Essence Added

Nov 26, 2022
Public Build: 0.756.9

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 s

Jun 17, 2022
Public Build 0.756.3 Now with Lovense Support!

Starting with build 0.756.3, the game now has support for all Lovense sex toys! Experience the sensations felt by characters in the game using high quality elegantly designed sex toys from Lovense. Ch

Nov 17, 2021
Public Build 0.754.3

Due to my current situation, I decided to make the most recent build public with a few additional fixes and tweaks. Pregnancy now takes 3 days Fixed tooltips Updated translations Updated the Ancient S

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-09-26.

Genres	Adventure, Indie, Free To Play, Early Access
Features	Single-player · Family Sharing
Languages	English * *
Official site	https://discord.gg/6DpR6sb

Minimum system requirements (PC)

Minimum: Requires a 64-bit processor and operating system OS: Windows 10 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