Cyan Brain -demo 8.1- -nekouji Studio- 〈CERTIFIED – 2026〉

: Clothing tears progressively as the character takes hits, and defeats trigger unique "ryona" animations with grotesque gore details. The game includes 36 collectible death cards and a survival-focused story. G-EIGHT 遊戲展 Version & Availability Demo Status

Upon its full release, Cyan Brain was met with positive reviews from the indie action community. On Steam, it garnered a . The game has been praised for its "stylish, intense addition to the 2025 action shooter lineup".

: Losing a battle triggers unique animated execution scenes and rewards the player with collectible Death Cards . Cyan Brain -Demo 8.1- -NEKOUJI STUDIO-

The core of the CYAN BRAIN experience, even in its Demo 8.1 form, is a punishing 2D side-scrolling action shooter. The player is armed with a lethal combination: a and a gun for ranged attacks (a key gameplay aspect familiar to fans of titles like Sinjid or The Dishwasher: Vampire Smile ).

Cyan Brain is a dark, decadent sci-fi side-scrolling action shooter developed by = NEKOUJI STUDIO = : Clothing tears progressively as the character takes

For more updates on Cyan Brain, NEKOUJI STUDIO’s dev blogs, and hidden secrets in Demo 8.1, follow our coverage here.

: Features a mix of close-quarters knife combat and a variety of 16 distinct guns. Players use god-like dodge rolls and headshot-focused shooting to survive. Progression & Content On Steam, it garnered a

As a relatively new circle (a term used for Japanese hobbyist groups), NEKOUJI STUDIO burst onto the scene with an ambitious debut. Working with , the studio introduced CYAN BRAIN as its first and, as of early 2026, only major PC title. This project was helmed by the artist iuui (イウウイ) , who not only crafted the game's visuals but also built the very world it inhabits. NEKOUJI STUDIO operated a multi-platform community presence, engaging its fanbase via Patreon for exclusive updates and bug reports , Ci-en (DLsite's Japanese creator platform) for development logs and monetization, and X (formerly Twitter) to share instant announcements.

What separates from mainstream platforming shooters is its commitment to extreme horror and adult content. Built for mature audiences, Demo 8.1 treats death not merely as a mechanical failure state, but as a core narrative event.

This demo serves as a proof-of-concept for the core mechanic: "Perspective Shift." It demonstrates the player's ability to alter the geometry of the world by manipulating their own emotional frequency.