Steam game Phantom PHANTOM OF INFERNO NITRO ARCHIVE key visual

Out Now

Japanese, English, and Simplified Chinese

$29.99

The neo-noir visual novel Phantom PHANTOM OF INFERNO, originally released in 2000 as Nitroplus’s (now NITRO ORIGIN) first title, is now on Steam!

The game is released on Steam in three languages: Japanese, English and Simplified Chinese.

  • Voiceover is only available in Japanese.

Phantom is also the debut work of renowned writer Urobuchi Gen, known for titles such as Puella Magi Madoka Magica, and is now playable on modern Windows systems.

  • This product is a Steam port of the Windows version released in 2013, incorporating elements from the TV anime. There are no changes to the game's content.

Playable demos will be at the NITRO PLUS booth (Hall 9, Indie Game Area, C-55) at TOKYO GAME SHOW 2026 (Makuhari Messe), September 17 (Thu) – 21 (Mon)!

  • Thumbnail: Promo Video
  • Thumbnail: Cinematic Video

Story

A web of swirling conspiracies.
A whirlwind of bullets. Amidst it all, a poignant tale of a boy and a girl unfolds...

A string of assassinations targeting mafia leaders rocks the criminal underworld, giving rise to rumors of a mysterious organization known as Inferno and its deadliest assassin, Phantom.

While on a solo trip to the United States, a teenage boy finds himself face-to-face with this so-called Phantom—only to discover that she’s a girl roughly his own age.

Stripped of his memories, the boy is taken in by Phantom and trained in the art of killing. As he learns, he grows into an assassin capable of standing alongside her, and is gradually drawn into the organization’s conspiracies.

In this ruthless, lawless world, what will become of the two young assassins...?

Phantom

The title given to the top sniper of the secret organization Inferno.

No one has ever known their true identity, and they have become something of an urban legend.

Inferno

Among the many crime syndicates in America, this organization is formed by promising young leaders who band together across the boundaries of race and nationality. They aim to take control of the underworld by avoiding unnecessary conflict and sharing their gains. Under the banner of “reforming an outdated order,” they systematically eliminate those in the upper echelons who stand in the way of their members’ ascent.

Characters

Product

Steam game Phantom PHANTOM OF INFERNO NITRO ARCHIVE key visual

Product Details

Title
Phantom PHANTOM OF INFERNO NITRO ARCHIVE
Genre
Neo-noir Visual Novel
Release Date
September 4 (Fri), 2026
Price
$29.99
Platform
Steam
Available Languages
Japanese, English, Simplified Chinese
Voiceover
Fully voiced (Japanese)
Player count
Single-player
Rating
Recommended for ages 15+

Staff & Cast

Story
Urobuchi Gen / Yasukawa Shogo / Morimiya Takashi
Character Concepts
Yanoguchi Kimi
Character Design
Yamashita Yoshimitsu / Sasaki Mutsumi / Kikuchi Yoko / Kado Tomoaki / Tsubata Yoshiaki / Shiba Minako
Cast
Zwei (Reiji Azuma)
Irino Miyu
Ein/Phantom
Takagaki Ayahi
Claudia McCunnen
Hisakawa Aya
Cal Devens
Sawashiro Miyuki
Mio Fujieda
Koshimizu Ami
Scythe Master
Chiba Isshin
Lizzie Garland
Watanabe Akeno
Raymond McGuire
Chiba Susumu
Isaac Wisemel
Ishikawa Hideo

System Requirements

OS
Windows 11 64bit
Processor
Minimum
Intel Core i5
Recommended
Intel Core i7
Memory
Minimum
8 GB RAM
Recommended
16 GB RAM
Graphics
Minimum
DirectX 11 compatible onboard chipset with Pixel Shader 4.0 or higher, 1 GB VRAM
Recommended
Dedicated Graphics Card with 1 GB VRAM
Sound Card:
XAudio2 compatible digital sound card
DirectX
Version 11
Storage
4 GB available space
Monitor
32bit 1920x1080 with TrueColor (Screen size can be changed in settings)
Playback Mode
N/A
CG Viewer
Available
Sound Mode
Available

Purchase on Steam

Notes

Please refer to the online manual for information on how to play the game.

  • This is a Steam port of the Windows version of Phantom PHANTOM OF INFERNO released on August 30, 2013. There are no changes to the game's content.
  • Please ensure your system meets the requirements for smooth operation.
  • Due to potential compatibility issues with installed software or hardware configurations, we cannot guarantee flawless performance in all environments.
  • If you are experiencing issues with the game, please refer to the online manual before contacting us.
    If the problem persists, please contact us using the support form (Japanese).
Phantom PHANTOM OF INFERNO(Steam Version) Promo Video (Japanese)
Phantom PHANTOM OF INFERNO(Steam Version) Cinematic Video (Japanese)
Scene 1
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Scene 5
Scene 6
Scene 7
Scene 8
Character Illustration: Zwei (Reiji Azuma)
Are you some kind of assassin or something?

Zwei (Reiji Azuma)

Voiced by
Irino Miyu
Sample Voice

The main character of this story. While on a trip to the United States, he happens to witness a murder and tries to flee, but is taken captive.

Recognizing the instinctive skill he displays in his attempt to escape, his captors wipe his memory and force him to train as an assassin.

Under the instruction of Ein—Phantom—his latent abilities awaken, and he is reborn as the assassin known as Zwei.

Character Illustration: Ein/Phantom
I was born to kill.

Ein/Phantom

Voiced by
Takagaki Ayahi
Sample Voice

Inferno’s top sniper—the girl known as Phantom.

She is a killer shaped through Scythe Master’s brainwashing. Stripped of all memories of her former life, including her name and age, she was trained to become an expert in assassination and espionage, suppressing all emotion to carry out her missions.

She also possesses extensive specialized knowledge and is fluent in English, Japanese, German, Russian, and Cantonese. By order of the organization, she takes on the task of training the protagonist as an assassin. But by taking him on, she may be in for much more than she bargained for...

Character Illustration: Claudia McCunnen
You should know better than to ask a woman “why.”

Claudia McCunnen

Voiced by
Hisakawa Aya
Sample Voice

A high-ranking executive of the criminal organization Inferno. Despite her youth, she is a shrewd woman who has managed to claw her way to the upper echelons. Calm, collected, and calculating, she is always one step ahead of her opponents.

She is also ruthlessly ambitious, and will stop at nothing to achieve her goals, no matter how big the risk.

She sympathizes with the protagonist as a captive of the organization, and bestows various favors upon him. However, her position is threatened by her subordinate, Scythe Master. As the protagonist is being groomed as Scythe’s second pawn, she schemes to steal him away. But in doing so, she begins to develop feelings for him that go beyond what she intended...

Character Illustration: Cal Devens
I can help.

Cal Devens

Voiced by
Sawashiro Miyuki
Sample Voice

A girl the protagonist meets after he has become a professional killer. After running away from home, she was taken in by a prostitute and has lived in the inner city ever since.

After a slip-up by the protagonist, she becomes entangled in the organization’s schemes, and her life is put at risk.

With no other choice, he takes her in under the pretense of making her his apprentice to keep her safe, but in the process, she grows fond of him. As the two are practically forced to live together, she opens her broken heart to him. However, she is completely unaware of the cruel fate that awaits her...

Character Illustration: Mio Fujieda
But right now, in this moment, I have the power to help you.

Mio Fujieda

Voiced by
Koshimizu Ami
Sample Voice

A girl attending a Catholic school in Japan. She's the same age as the protagonist, who has recently transferred in. Drawn to his mysterious allure, she begins to develop feelings for him.

She often lets herself be carried away due to her easygoing nature, but when push comes to shove, she reveals a sharp mind and a strong inner resolve.

Her origins conceal a secret even she does not know—one that will drag her from her peaceful life into a world of violence...

Character Illustration: Drei
I’ll take you on, then. Let’s fight.

Drei

Voiced by
???
Sample Voice

A skilled hitwoman for the organization Inferno.

She harbors animosity toward Ein and the protagonist as she aims for the top spot.

Character Illustration: Scythe Master
Excellent, Ein! Wonderful! You truly are the best material I’ve ever had.

Scythe Master

Voiced by
Chiba Isshin
Sample Voice

Claudia’s subordinate. An expert in brainwashing and reeducation who trained Ein.

Though a relative newcomer to Inferno, his ability to cultivate exceptional assassins has earned him recognition, and he continues to rise through the ranks at an astonishing pace. He is overwhelmingly confident, and wantonly puts his desires and ambitions on display for all to see.

He seeks to overthrow his superior, Claudia, and take her place in the organization. This is the very man who recognized the protagonist’s potential and brought him into this world.

Character Illustration: Lizzie Garland
...You better not die on me, kid!

Lizzie Garland

Voiced by
Watanabe Akeno
Sample Voice

A markswoman for the organization, as well as Claudia’s subordinate and dearest friend.

She can be quite crass, but harbors a strong sense of loyalty and honor. She has no interest in personal gain and remains uninvolved in the organization’s schemes.

She always speaks her mind and lives her life without a care. For that very reason, she will openly display her contempt for self-minded schemers.

Character Illustration: Raymond McGuire
Let the Phantom name strike dread into the heart of the underworld.

Raymond McGuire

Voiced by
Chiba Susumu
Sample Voice

The leader of Inferno. Formerly a member of a Colombian drug cartel.

Born into a family of leading figures in the underworld, he was born into excessive wealth and power in a nation ravaged by poverty.

He is a modern-day aristocrat, accustomed to ruling over others. His dignity and refinement befit nobility, while his ruthlessness rivals that of any despot. Those who defy him are swiftly granted the freedom of death.

Character Illustration: Isaac Wisemel
And that's God's truth, cross my heart.

Isaac Wisemel

Voiced by
Ishikawa Hideo
Sample Voice

An executive of Inferno. Boss of the most powerful street gang in Los Angeles, the Bloodies.

He is one of the founding members of the organization and the face of its operations in LA. He is effectively the second-in-command.

He’s close enough with McGuire to call him “Ray.” He has been suspicious of Claudia ever since a certain incident in the past.