
Cyan Brain is a decadent sci-fi side-scrolling action shooter. Awaken to face endless slaughter and desperate encounters. "Are you ready to make the ultimate devotion?"
Modeled estimate, not a reported figure. How we estimate →
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About
‼️This game contains violence, gore, and extreme content. Please read and play with caution.‼️

Unknown time. Unknown place.
The moment the nameless girl opens her eyes, her destiny is already set in motion. With no prayer nor blessing to guide her, she steps alone into a colossal ruin choked with deranged machines.
After unbearable despair and the unending cycle of slaughter, the wavering blue light of her will is shattered, stolen, and trampled again and again, yet she continues forward.
Between cruelty and salvation, the tolling of the Church’s bells cuts through the world, and as their maddening echo strips away the last restraints of flesh and mind, the world begins to shift.
In the depths of this nightmare, she sees it:
Two souls appear, reflections of each other's shadow.
"Are you ready to make the ultimate devotion?"
A dark fable of existence, annihilation, terror and pleasure
- CYAN BRAIN


CYAN BRAIN is a decadent sci-fi side-scrolling action-shooting game.. The game includes the following:
When you take damage in combat, your outfit will gradually tear. Successful attacks trigger random, realistic blood-splatter effects that make the action feel even more visceral. If an enemy defeats you, a unique execution animation will play, and you’ll receive a collectible Death Card upon your character’s demise.

weapons: 16
Enemies & Traps: 32
Execution & H-Animations: 34
Death Cards: 36
Full-Screen HCGs: 3
You can view them all in the in-game gallery!
Eating food increases your hydration. Healing items are automatically created at max hydration.
Use your melee weapon to take out enemies when out of ammo
If you don't want to go out in the nude, saving the game will bring back your clothes.

Protagonist
CV: Momoka Kosuzu

A girl who has lost both her name and her memories. To fulfill the mission entrusted to her, she explores a vast ruined city while battling the many hostile entities created by the organization known as the Church: a group that once reshaped her body into a living weapon. Each fight sharpens her skills, strengthens her body, and leads her to new and powerful gear whose potential she gradually unlocks.
By following the memory fragments scattered throughout the map, she draws closer to the truth behind this devastated world. The companions she meets along the way give every step she takes through the ruins real meaning. In time, those connections will become the signposts guiding her toward the "end of fate" that awaits.
HS202
CV: Ryo Suzuki

A member of the Church's Hunting Squad, but... it seems she's gotten lost.
L
CV: Izumi Mikoshiba

A former researcher of the Convent. Before her death, she preserved her lingering consciousness inside a specialized device and entrusted a certain plan to the newly awakened protagonist.
M
CV: Yui Otokura

A mysterious girl who appeared within a strange domain. She speaks in a cold, mechanical, almost emotionless tone.
*The final version of the game will be uncensored. Store images are for promotional reference only.
Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: Japanese*, English, Simplified Chinese, Traditional Chinese, Korean*languages with full audio support
Engagement
Hours played at review time, across 53 reviews with recorded playtime.
Reviews
Themes across 53 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
positive critical· bar length = how often the theme comes up
Reviews
作者小时候在全黑的巷子里走路被狗咬过做出来的游戏
开局两个液压机根本过不去,慢点会死啊反应慢没资格玩你这个傻逼游戏是吗?
如果是为了色色,我觉得可以跑路了 有色色但是更多的是18g 游戏称不上多好玩,只能说马马虎虎吧 最后战败cg不用战败,只需要杀死敌人一次就行了
I wish that this game was better, the h3ntai scenes are so rad and brutal, but there's no story whatsoever, and all the enemies run at you one at a time, and are all damage sponges. There's just really not even a game here to speak of. It feels super unfinished. I can't recommend that anyone buys it.
lovely, amazing art by iuui c:
为了这个游戏当了香港人,但是大失所望,纯纯猎奇小游戏,要是为了涩涩,真不如去看小电影,涩涩的cg是有的,但不多,更多的是处决画面,猎奇,恶心,涩涩cg也是扶她,全片没有一个男性,其次游戏小,真不值这个价,但是画风还是不错的,2d的打枪游戏,像小时候玩的爆枪英雄,但是又加入了液压机,锯齿陷阱,地刺陷阱的需要看准时机翻滚的机关,游戏性不强,开头的液压机卡了半天,重申三遍,猎奇,猎奇,猎奇,慎玩,慎玩,还是他娘的慎玩。。。
インストール時に言語を英語にして起動しましょう。 ゲーム内で表示言語を変えられるので何の意味があるかというと、 モザイクのその先を見ることができます。
Great game! I strongly suggest playing on Easy, the gameplay isn't anything to write home about but I feel on normal and hard all it really does is make enemies bullet sponges. Easy is satisfying to play and you'll still die if you're careless. Gameplay aside, you're here for the art. It's a beautiful game with great lighting and scenes. Shooting in pitch black areas with muzzle flash illuminating the shadows of yourself and approaching enemies is always a great visual. The other "Issue" to address is the animations. They're phenomenal, easily some of the hottest i've seen. BUT If you're not into guro/ryona then this might not be the game for you. The sexual ones are 10/10 on their own but you get so much more if you're able to appreciate the eroticism of guro.
HAOSAO
holy peak 🥹🥹
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Trends
Price over time, from our own daily price tracking.
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
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