What it likely sold — estimate, stated as a range on purpose
Lifetime units: ~44.7k
(P10–P90: 17.9k – 98.3k)
Gross revenue: ~$549k
(P10–P90: $220k – $1.2M)
Estimate, method v1.0 — before Steam's ~30% share, refunds and VAT. The band approximates where about 8 in 10 comparable games land in published studies; some sit outside it. Our own hit rate goes on the accuracy ledger once measured. How we estimate
Estimates are statistical inferences from public data. They are not sourced from Valve or the developer and may deviate materially from actual results. Do not rely on them for investment or contractual decisions. As of Jul 7, 2026.
Player voice — measured shares of Steam thumbs, never a model
Gameplay & mechanics89% positive · 114 mentions
“Concise Game Reviews: CYAN BRAIN [CYANBRAIN/シアンブレイン] (Scroll down for the longer version) Game Value: ✅ Highly recommended for fans of brutal sci-fi side-scrollers laced with ryona, where an amnesiac busty operative's desperate gunfights…”
Recommended · Steam review · Dec 2025 · 58 h played · Report / request removalStory & writing90% positive · 108 mentions
“So I don't usually leave reviews on H-games because there's a possibility it could get back to certain people I know irl, and I don't need to have that conversation--but I feel compelled to leave a review here because I think this game is…”
Recommended · Steam review · Jan 2026 · 7 h played · Report / request removalVisuals & audio93% positive · 98 mentions
“This game portends the question: what if we took the juxtaposition of sex and death to its extreme and fused that into a low effort and repetitive video game with a great style and decent but very sporadic sci-fi storytelling? Do the…”
Recommended · Steam review · Dec 2025 · 5 h played · Report / request removalContent & longevity88% positive · 49 mentions
“This game portends the question: what if we took the juxtaposition of sex and death to its extreme and fused that into a low effort and repetitive video game with a great style and decent but very sporadic sci-fi storytelling? Do the…”
Recommended · Steam review · Dec 2025 · 5 h played · Report / request removalPrice & value85% positive · 27 mentions
“Short but enjoyable game overall. The gameplay isn't anything to write home about, but the R-18 guro art and animations are well worth the pricetag. Would definitely recommend if you're the target audience for this sort of content. To be…”
Recommended · Steam review · Feb 2026 · 6 h played · Report / request removalDifficulty & balance100% positive · 24 mentions
“Concise Game Reviews: CYAN BRAIN [CYANBRAIN/シアンブレイン] (Scroll down for the longer version) Game Value: ✅ Highly recommended for fans of brutal sci-fi side-scrollers laced with ryona, where an amnesiac busty operative's desperate gunfights…”
Recommended · Steam review · Dec 2025 · 58 h played · Report / request removalControls & UI88% positive · 16 mentions
“Beautiful game, but holy f***, sheesh, wow, I was not expecting that. So... I am not really into the whole gore thing, and I was given plenty of warnings and heads up before buying this. But I didn't read any because the publisher is a…”
Recommended · Steam review · Dec 2025 · 8 h played · Report / request removalPerformance & stability75% positive · 12 mentions
“Concise Game Reviews: CYAN BRAIN [CYANBRAIN/シアンブレイン] (Scroll down for the longer version) Game Value: ✅ Highly recommended for fans of brutal sci-fi side-scrollers laced with ryona, where an amnesiac busty operative's desperate gunfights…”
Recommended · Steam review · Dec 2025 · 58 h played · Report / request removal320 recent English reviews stored · topics keyword-matched · topics under 12 mentions stay hidden · methodology
Reviews are shown as published on Steam, including reviews from key activations and free copies — so percentages here can differ from the score on the Steam store page. GameTrend does not check whether reviewers bought or played the game.