
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
画风很不错,对得起这个价格,不过个人认为实在是有点啰嗦了,通关之后的特殊cg都不如战败cg好看,只有一种结局,我觉得应该多增加一点剧情互动性,不然实在是有点无聊了,如果满分一百分的话战败cg都够占70分了,有待改进,我期待续作
流程比较短,价格偏高,实用性一般,战败很多都是纯粹的处刑甚至不是H处刑,但制作还不错
i love the gore part
I loved this. The game play is pretty fun. Nothing special, but guns feel good, the melee attack is surprisingly useful and the generous invincibility frame during dodge roll makes this game feel less punishing than it could have been. The story is, again, nothing special. Something about mankind messing with science in things they shouldn't have and everything went to hell. Those tech billionaires. When will they learn? But I enjoyed some surprisingly cute moments in a setting where cute anime girls are being butchered left and right. I loved the Bestie character. I'm not really into guro. But it's kinda refreshing to see some shocking contents in this age of rampant censorships. Plus, I gotta admit the attention to detail that the artist put in is rather remarkable. Speaking of which, I highly appreciate not having to die just to unlock scenes. I'm all for defeat scenes, but I hate having to die on purpose just to unlock them in the gallery. In this game, simply clearing a level unlocks all the scenes from that level. That is a big plus to me. I'm the definitely going to pick up the sequel.
打击感,剧情,配音,cg都非常棒的游戏,作为黄油满分一百分的卷子它交出了一百二十分的答案。(但是r18g特化,不喜欢g向的还请速速离去)
游戏是好游戏,就是作者恶心人的小巧思藏不住 那我问你,为什么视角不能个远点给大点,主打一个近距离视角就是不给你看得多,配上跑得快的狗子女和虫子加上有遮挡的环境景物就是让你眼花让你玩的恶心 评价是司马游戏设计,傻逼作者
holy peak 🥹🥹
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.
Cool art, mid gameplay, interesting story Art best part is the art. The dev really did a good job with animation; sex scenes are good, and gore scenes are beautiful. The style is interesting; I like the brutal and almost scary game. It has a cozy save room that contrasts the mood so well. The music belongs to its setting; in short, it's good. Gameplay gameplay is the most boring part; it's just a gun and a dodge that dodges every type of damage; it's slow. So sometimes I don't have to kill all the monsters and just dodge to the door. Bosses are too easy. The worst part is that it's 70-80 percent of the game. Story The story is pretty much tied to art, the environment, the enemy, and the text that scatters around the map. Maybe the dev wants the player to interpret the situation. But in my opinion, it should be more interesting. This one, I can't really tell what to improve; the dynamic between the characters is alright. I feel that it lacks something while in the middle of the map; maybe it's just boring gameplay that makes that part feel underdeveloped. NSFW stuff 70%gore 20%sex 10%inbetween. It's a gore-focused game; the majority of game over scenes are gore. They did a good job with detail; some scenes are so cool. However, the devs are capable of doing good sex scenes; the animations are really well done. Summary Art carries this game; if you can't stand slow and boring gameplay, don't buy. If you want this game for sexual pleasure only, if you're into gore, buy(maybe, I'm not into gore stuff), if not, don't buy. If you aren't into gore, but like the art, buy. If you want a great story, this game has its moment but it comes occationally, consider before buying.
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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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