Chaos Zero Nightmare

Chaos Zero Nightmare Soundtrack & Voice Cast: Behind the scenes with composers and talent

Chaos Zero Nightmare Artwork 8

Chaos Zero Nightmare impresses not just with striking gameplay, but also through an evocative soundtrack and a star-studded voice cast. Dive behind the scenes to meet the music creators and voice artists who bring Ark City’s chaotic drama to life.

Soundtrack Highlights & Composer Background

The Chaos Zero Nightmare original soundtrack was led by Smilegate’s in-house composer team, with major collaborations including Hololive English vocalists Mori Calliope and Nerissa Ravencroft on the breakout title theme “OVER RIDE”. The OST blends dark orchestral themes, cyberpunk synths, and haunting vocal tracks to capture both despair and hope throughout the game’s journey.​

  • Key tracks: “OVER RIDE”, “Ark City Nocturne”, “Broken Edge”, and dynamic boss fight themes, each tailored to major character arcs and rogue encounters.
  • Production details: Much of the music was designed using a hybrid workflow, live instruments, high-def synths, and digital mixing, under direct supervision from the game’s director, who cited iconic anime and Korean dramas as musical inspiration.​​

Learn more about the soundtrack’s creation with this Smilegate reveal and composer interview.​

Chaos Zero Nightmare’s voice cast features top Japanese seiyuu and Korean drama actors, forging intense performances that resonate with fans globally. All major story characters, including Hugo, Renoa, Haru, and Amir, are fully voiced in Korean and Japanese, with English and Traditional Chinese subtitles.​​

CharacterJapanese SeiyuuKorean VAOther Notable Roles
HugoYuki OnoMin-sik Kim進撃の巨人 (Attack on Titan), 青の祓魔師 (Blue Exorcist)
HaruKana HanazawaSo-Yeon Kimシュタインズ・ゲート (Steins;Gate), PSYCHO-PASS
RenoaNatsuki HanaeJi-hoon Park鬼滅の刃 (Demon Slayer), 東京喰種 (Tokyo Ghoul)
AmirYuuichi NakamuraMyung-Jin ParkCLANNAD, ワンパンマン (One Punch Man)

Full video showcase of seiyuu and voice comparisons: Chaos Zero Nightmare Characters and their Japanese Seiyuu.​

Voice talent were hand-picked for their experience with gritty dramas and genre-defining anime, contributing emotional depth to the chaotic stories of Ark City’s agents. The official VA introduction gives background and favorite moments for each main performer.​

Behind the Scenes: Creative Process

Director interviews and commentary reveal that the music team and VA cast worked closely with writers to synchronize dialogue, emotion, and score across cutscenes. Hololive’s involvement was highlighted as “a breakthrough moment in mixing global pop with dystopian themes,” aiming for instant fan recognizability alongside atmosphere.​​

Community and dev interviews discuss challenges, from adapting scripts into multiple languages for performance, to layering music cues in fast-paced boss fights. Actor Q&As can be found at Chaos Zero Nightmare’s Facebook VA Introduction and director commentary blogs.​

Useful links for full credits and interviews:

The soundtrack and VA work set Chaos Zero Nightmare apart, delivering a global, emotionally resonant experience with industry-leading talent at every turn.

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Jake Skudder

Jake is an SEO-minded Football, Combat Sports, Gaming and Pro Wrestling writer and successful Editor in Chief. Most importantly, he is a Gacha players who specialises in Genshin Impact. On top of that, Jake has more than ten years of experience covering mixed martial arts, pro wrestling, football and gaming across a number of publications, starting at SEScoops in 2012 under the name Jake Jeremy. His work has also been featured on Sportskeeda, Pro Sports Extra, Wrestling Headlines, NoobFeed, Wrestlingnewsco and Keen Gamer, again under the name Jake Jeremy. Previously, he worked as the Editor in Chief of 24Wrestling, building the site profile with a view to selling the domain, which was accomplished in 2019. Jake was previously the Editor in Chief for Fight Fans, a combat sports and pro wrestling site that was launched in January 2021 and broke into millions of pageviews within the first two years. He previously worked for Snack Media and their GiveMeSport site, creating Evergreen and Trending content that would deliver pageviews via Google as the UFC and MMA SEO Lead. Jake managed to take an area of GiveMeSport that had zero traction on Organic and push it to audiences across the globe. Jake also has a record of long-term video and written interview content with the likes of the Professional Fighters League, ONE and Cage Warriors, working directly with the brands to promote bouts, fighters and special events. Jake also previously worked for the biggest independent wrestling company in the UK, PROGRESS Wrestling, as PR Head and Head of Media across the social channels of the company.

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