AliasesChäoS;HEAd, C;H, カオスヘッド, カオヘ
LengthMedium (10 - 30 hours)
LinksWikipedia, Encubed
Developer5pb. Games & Nitroplus & Red Flagship & Project Blue Sky
Publishers Nitroplus
 Project Blue Sky & TLWiki
 Mogu Hanhuazu
 DeadliNe & Shinra Tensei & Kae Pro
Alternative version
Chaos;Head Noah
Related anime[DB-ANN] Chaos;Head (2008)


Takumi is a high school student. He is withdrawn and is not interested in 3D things. In his town, a mysterious serial murder case happens and people get panicked. One day, when he chats on the internet, a man suddenly contacts him and gives him a URL. He goes to the website and finds a blog image that suggests a next murder case... On the next day, it really happens...

[From HimeyaShop]

Long Common Route 3.0 Pretending Heroine 3.0 Delusion 3.0 Daydreams 2.9 Conspiracy 2.9 Protagonist with Voice Acting 2.9 Paranoia 2.9 Otaku Protagonist 2.9 Madness 2.9 Murder Mystery 2.9 Science Fiction 2.9 Modern Day Shibuya 2.8 Existential Crisis 2.8 Late Branching Plot 2.8 Built-in Encyclopedia 2.8 Fighting Heroine 2.8 ADV 2.8 Descriptions of Violence 2.7 Modern Day Tokyo 2.7 Protagonist with Psychological Problems 2.7 Gamer Protagonist 2.7 One True End 2.7 Male Protagonist 2.7 Linear Plot 2.7 Hikikomori Protagonist 2.7 Student Heroine 2.6 Protagonist's Sister as a Heroine 2.6 Fear of Death 2.6 Attempted Suicide 2.6 Denpa 2.5 Internet 2.5 Lip Sync 2.5 Heroine with Zettai Ryouiki 2.5 Constructs 2.5 Mystery 2.5 Desperation 2.5 Societal Collapse 2.5 Drastic Character Development 2.5 Torture 2.5 No Sexual Content 2.5 Protagonist with a Face 2.5 Other Perspectives 2.5 Senpai Heroine 2.4 Student Protagonist 2.4 Drama 2.4 Sword Combat 2.4 Bad Ending(s) 2.4 Mind Screw 2.4 Graphic Violence 2.4 Bloody Scenes 2.4 Ponytail Heroine 2.3 Heroine with Glasses 2.3 Tsundere Heroine 2.2 Secret Identity 2.2 Suicidal Protagonist 2.2 Imouto-type Heroine 2.2 Horror 2.1 Detective Work 2.1 Multiple Songs 2.1 Multiple Endings 2.1 High School 2.0 Infodumping 2.0 Ladder Structure 2.0 Playtime Counter 2.0 Social Networking Service 2.0 Brief Branches Only 2.0 Voice Replay 2.0 Death of Heroine 2.0 Heroine with Ahoge 2.0 Unlockable Routes 2.0 Death of Protagonist 2.0 Coodere Heroine 1.9 Police 1.9 Brief NVL Scenes 1.9 ESP 1.9 Nurse Support Character 1.8 Heroine with Multiple Personalities 1.8 Loli Heroine 1.8 Game Over 1.8 Protagonist with Imaginary Friends 1.7 Betrayal 1.7 High Amount of Special Effects 1.7 Protagonist's Sister as a Support Character 1.6 Genre Savvy Protagonist 1.6 Enforced Playing Order 1.6 Flashback 1.5 Hospital 1.3 Cannibalism 1.3 Pre-rendered Backgrounds 1.2 Changeable Clothes 1.1 Kissing Scene 1.0 Bad Endings with Story 1.0 Timed Choices 0.9 Otaku Heroine 0.8 Mid-game Videos 0.8 Foolish Friend 0.6 Hetare Protagonist 0.5 Bullying 0.4 Dystopia 0.3


2008-03-2115+  Chaos;Head - Trial EditionFully voicedStory: Simple animationsFreewareCommercial800x600Internet downloadA version 2 of the trial edition was released on the 11th April. This added extras from TECHGIAN May issue DVD.  
2008-04-2515+  Chaos;HeadFully voicedStory: Simple animationsNon-freeCommercial800x6001 DVD  
2010-07-3015+  Chaos;Head Nitro The Best! Vol.4Fully voicedNon-freeCommercial800x6001 DVD  
2008-12-3115+  Chaos;Head (patch)FreewareThe patch has been taken offline when negotiation with J-List started.  
2017-01-29  Di-Patch for Chaos;Head PC (patch)FreewarePatch by Project Blue Sky for the RC2 LH3 Chaos;Head translation. Fixes bugs and updates certain translation choices (including "300-man Committee" -> "Committee of 300" and "Giga-lo-maniac" -> "Gigalomaniac").  
2018-10-19  Di-Patch 2.0 for Chaos;Head PC (patch)FreewarePatch by Project Blue Sky for the RC2 LH3 Chaos;Head translation. 

Fixes bugs, updates certain translation choices/errors (including "300-man Committee" -> "Committee of 300" and "Giga-lo-maniac" -> "Gigalomaniac"), adds Committee of 300 TIP translation, enhances skip mode functionality (now stops at triggers).  
2019-01-22  Di-Patch 2.5 for Chaos;Head (patch)FreewareImprovements Over Di-Patch 2.0:

Remade Chapter Titles

Video Playback Fixed

Staff credit roll was remade and made transparent. The original English release screwed this up and made the background white.

Backlog has been fixed.

Improvements over Di-Patch 1.0:

5pb's logo has been restored during game start

Skip Mode stops at delusion triggers

Committee of 300 tip has been added thanks to ItsRigs

Bazellad has been changed to Baselard for consistency.

Glajioul has been changed to Gladioul, as this is a more correct localization.

Shogun's chat message now has text in the textbox in English.

Takumi sleepwalking typing on the computer has been subtitled.

Fixed a line during Suwa's and Ayase's encounter in chapter 8 which didn't make any sense

ItsRigs' translation of the `Whose eyes are those eyes?´ essay has been inserted back into the game.  
2009-05-0115+  Chaos;Head (patch)FreewareInternet downloadSimplified Chinese  
2012-03-0215+  Chaos;Head PrologueFreewareCommercialInternet download  
2013-01-0115+  Chaos;Head DemoFreewareCommercialInternet downloaddemo version russian translation  
2019  Chaos;Head (patch)FreewareInternet downloadFull Russian Translation  
TBA15+  Chaos;Head (patch)FreewareInternet downloadTranslation Progress: 47\??? (23.02.2015)  
2017-11-2316+  Chaos;Head (patch)Freeware  


Hide spoilersShow minor spoilersSpoil me!

Character summary

Protagonist Nishijou Takumi
Main character Aoi Sena
Voiced by Nabatame Hitomi
Main character Kishimoto Ayase
Voiced by Sakakibara Yui
Main character Kusunoki Yua
Main character Nishijou Nanami
Voiced by Miyazaki Ui
Main character Orihara Kozue
Voiced by Tsuji Ayumi
Main character Sakihata Rimi
Voiced by Kitamura Eri
Main character Seira Orgel
Voiced by Tomonaga Akane
Side character Ban Yasuji
Voiced by Ichijou Kazuya
Side characterGrim
Side character Hazuki Shino
Voiced by Aoki Noriko
Side character Kusunoki Mia
Side character Misumi Daisuke
Voiced by Ono Daisuke
Side character Momose Katsuko
Voiced by Kujira
Side character Shogun
Voiced by Yonaga Tsubasa
Side character Suwa Mamoru
Voiced by Yasumura Makoto
Side character Takashina Fumio
Voiced by Ishida Akira

User stats

Vote stats
3579 votes total, average 7.39 (good)
Recent votes(show all)


Popularity: ranked #32 with a score of 33.86

Bayesian rating: ranked #261 with a rating of 7.37



Screenshot #605Screenshot #606Screenshot #607Screenshot #608Screenshot #610Screenshot #611


Screenshot #8007Screenshot #8008Screenshot #8009Screenshot #8494