CYAN BRAIN

CYAN BRAIN

NEKOUJI · December 12, 2025 · Sexual Content, Gore, Nudity, Hentai, Female Protagonist

Buy CYAN BRAIN from Steam at $14.99 — the cheapest of 1 store we compare.

PC
Very Positive90% · 1,48835playing now
Best price 34 Fair price
$14.99
lowest tracked $13.49
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Where to buy CYAN BRAIN — official stores

Steam
Steam
Standard Edition · Steam
$14.99
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CYAN BRAIN price by region

CYAN BRAIN costs £12.79 in the United Kingdom, €14.79 in Europe (EUR), $14.99 in the United States, $14.99 in Georgia (USD), CA$19.49 in Canada, A$21.95 in Australia, NZ$21.99 in New Zealand, zł39.00 in Poland and R$46.99 in Brazil right now.

Cheapest CYAN BRAIN offer in each region, in local currency
RegionBest priceOfficial storeKey shopStores
United Kingdom £12.79 £12.79 — 1
Europe (EUR) €14.79 €14.79 — 1
United Statesyour region $14.99 $14.99 — 1
Georgia (USD) $14.99 $14.99 — 1
Canada CA$19.49 CA$19.49 — 1
Australia A$21.95 A$21.95 — 1
New Zealand NZ$21.99 NZ$21.99 — 1
Poland zł39.00 zł39.00 — 1
Brazil R$46.99 R$46.99 — 1

Each row is a real price from that region's own stores, not a currency conversion, so the figures are not directly comparable. Switch regions in the header to shop the one you buy in.

About CYAN BRAIN

✦ AI summary

CYAN BRAIN is a visceral sci-fi side-scrolling shooter where a nameless girl awakens in a colossal ruin and battles deranged machines while uncovering fragmented memories of her past as a living weapon. Gear up with 16 unique weapons, execute enemies with brutal precision, and uncover the truth behind the Church's devastating world through dynamic combat that tears away your outfit and scatters realistic blood effects with every encounter.

‼️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 BRAINCYAN BRAIN is a decadent sci-fi side-scrolling action-shooting game.. The game includes the following:

Visceral shooting action

Fear-inducing executions

Mountable heavy weapons

Full-screen animated cinematics

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.

Collectibles:

  • 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!

Gameplay Hints:

  • 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.
ProtagonistCV: Momoka KosuzuA 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.HS202CV: Ryo SuzukiA member of the Church's Hunting Squad, but... it seems she's gotten lost.LCV: Izumi MikoshibaA 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.MCV: Yui OtokuraA 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.

CYAN BRAIN — game info

Platforms
Windows
Steam Deck
Playable
Player modes
Single-player
PC Game Pass
Not included

DLC & expansions

🎁 Complete the collection

Base game + 1 of 1 DLC at today's best prices.

$19.98
to own everything

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Recommended Aug 28, 2026
I wish I was her...
6 found this helpful
Recommended Aug 30, 2026
I'll wait for Cyan brain2
3 found this helpful
Recommended Aug 29, 2026
After 5.4 hours I have finally beaten the game. The enemies are varied and the bosses are sometimes difficult sometimes you can cheese them. Each has their defeat scenes. Some are good. Some are gore. Some are just eh. The plot I mostly skimmed but I also like to explore every nook and cranny in games and this game does reward that. Its not mandatory though for game completion. There are hidden lore pieces and weapons you can find. No hidden H though. for 15$ I would say this game is worth it. You should probably still though wait for a discount. There isnt much hentai as you might expect but still a good handful. i wish there was more honestly. The yuri between the main characters is like maybe 5 scenes total. Then the enemies 1 each. Some level completion bonus art of the scene for some of them. All good stuff. I like it personally the game and the scenes, the art, and will recommend. Additionally the developers are making a cyan brain 2. Hopefully with the sequel we get more of everything :)
2 found this helpful
Recommended Sep 8, 2026
Much better than I expected! I played it on Easy and proceeded to repeatedly die to traps, so I cannot speak about other difficulties. A pleasant surprise were the art and the fact that it is a rollback, not a continuation, upon death, so the heroine can make it trough the story unscathed, with the exception of one scripted stabbing. Another nice bit is that the NPC scenes unlock when meeting them, without needing to lose! Campaign progress will get you all the achievements, the littlest bit of exploration will get you all the weapons (which are punchy and satisfying), and I have all but one of the collectibles. Story is typical for such titles, by which I mean a wee bit nonsensical, but it serves its purpose well enough. The only bad bit I can name is the janky platforming, owing to a weird snap-to mechanic, which will see the girl ocassionally teleported into a grinder or under a press. Taking the above into account, I say Go enact L's plan!
1 found this helpful
Not recommended Sep 9, 2026
classic case of a hentai game only giving you the hscenes when you fail. technically killing an enemy will give you their hscene in the memories section of the main menu, but i dont buy hgames to look at the gallery. there is maybe 5? consensual hscenes, the rest are rape and guro. the gameplay is braindead. you walk right, occasionally left, while zoomed out and you shoot at heads. enemies never appear from up close, above or behind you, there is never cover, there is never a need to get close. if you learn an enemys health, you may melee to finish them for some extra ammo, which is not needed because you can easily kill every basic enemy with your infinte ammo gun or its upgrade. has a flashlight and hunger meter; these are completely irrelevant and only a rare annoyance. enemy placements are mind-numbingly regular: its literally walk 10m, enemy, walk 10m the same enemy and on and on. this is literally every level and it repeats for wayy too long. the boss fights are super easy: the game gives you way too many rolls with iframes so you just move to the right side of the arena, dash thru the boss, then move to the left and repeat. the hscenes are simple but decent, i like most …
Recommended Sep 3, 2026
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