Cyan Brain
Game Information
Developer
NEKOUJI STUDIOVersion
v1.1.4 + DLC
Engine
Unity
Release Date
Jan 5, 2026
Last Update
Jan 13, 2026
Censorship
Censored
Overview
Cyan Brain is a 2D horror-adventure for players who want tension and dread mixed with adult content. It plays cold and hostile, with little room to relax.
Gameplay
Players run and hide from futa monsters across side-scrolling levels, managing pursuit rather than combat alone. The sandbox structure lets you explore at your own pace, gathering collectibles and unlocking achievements while staying ahead of what's chasing you. Encounters with enemies are frequent and unforgiving, built around evasion, timing, and the constant threat of capture.
Features
- Hand-drawn 2D art with animated enemy and event illustrations
- A roster of monster girl pursuers, including futa designs
- Side-scrolling shooter elements mixed into the chase-based structure
Notes
This game includes graphic violence and non-consensual content throughout, including rape and vore themes. Players sensitive to these topics should be aware before starting.
Installation
1. Extract and run.
Changelog
v1.1.4
- Thank you all for your patience! Achievements for Cyan Brain are now officially live.
- We have also implemented the following fixes and updates:
- Added sounds for the shower scene with HS202.
- Fixed enemy illustrations where the uncensored assets were incomplete.
- Fixed an issue where collectibles were not unlocking correctly via Cloud Saves.
- Fixed a UI bug that could cause the game to crash.
- v1.1.3 Hotfix
- Fixed an issue where respawning after saving would still place the player back at the beginning of the level.
- The saving issue is still under active investigation and repair. If you encounter any other related issues, please report them in the discussion forum.
v1.1.2
- Minor numerical adjustments and small bug fixes
- Added support for the Korean version