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Nitroplus

Nitroplus is supporting its 2025 PC action game Dolls Nest with a free October 2026 Combat Test update and a PLAMATEA model kit of the Unknown Armored Soldier, while its Nitro Origin label has released the 2000 visual novel Phantom PHANTOM OF INFERNO on Steam.

Synthesized from 5 Yomimono stories · updated 3d ago

Nitroplus is working two tracks at once. On the game side, Dolls Nest, its PC action title, gets a free major update in October 2026. The update adds Combat Test, an arena mode where players fight training units and a combat skill grade rises with the number of units destroyed. Reward items follow that grade. A trial build of Combat Test is playable at Tokyo Game Show 2026, though that build differs from the retail version. Outside the game itself, the Unknown Armored Soldier enemy from Dolls Nest is now a PLAMATEA assembly-type plastic model, sold through Rakuten Books at 11,031 yen including tax against a 12,799 yen reference price, with the AR102 A2 Gladius assault rifle, the Femt railgun, and ML32v5 Cetus missiles included along with a stand and interchangeable hands.

On the visual novel side, the Nitro Origin label released Phantom PHANTOM OF INFERNO on Steam on September 4, 2026. The release is the 2000 title that founded Nitroplus and the debut work of scenario writer Gen Urobuchi, later known for Puella Magi Madoka Magica and Fate/Zero. The Steam version matches the 2013 PC reverse port that added TV anime elements, supports Japanese, English, and Simplified Chinese text with full Japanese voice, and costs 3,500 yen including tax. The store page opened on August 7, confirming the date set after a January 1 announcement of the port, and the official website states there are no changes to the game content.

Across both tracks, the throughline is a catalog and a game library being kept in circulation. Dolls Nest gains repeatable content and a plastic model of the unit that stands in the player's way, while the Steam release puts the founding title in front of a modern audience with multilingual support. The stories do not agree on one label detail: one places the Steam release under Nitro Origin, another describes Nitroplus as the entity behind that brand.

Key facts

Dolls Nest update
A free major update for the PC (Steam) action game arrives in October 2026 and adds the feature Combat Test, playable at Tokyo Game Show 2026 in a build that differs from the retail version.
Combat Test mode
Players fight training units in arena-style content, a combat skill grade rises with the number of units destroyed, and reward items come according to that grade.
Unknown Armored Soldier kit
A PLAMATEA assembly-type plastic model of the Dolls Nest enemy, priced at 11,031 yen including tax against a 12,799 yen reference price, with preorders open on Rakuten Books.
Kit contents
Includes the assault rifle AR102 A2 Gladius, the railgun Femt, and ML32v5 Cetus missiles, with a stand and interchangeable hands.
Phantom Steam release
Nitro Origin released Phantom PHANTOM OF INFERNO on Steam on September 4, 2026, at 3,500 yen including tax.
Phantom content and languages
The Steam version matches the 2013 PC reverse port that added TV anime elements, supports Japanese, English, and Simplified Chinese text, and has full Japanese voice; the official website states there are no changes to the game content.
Series origin
The visual novel is based on the 2000 adult PC release, Nitroplus's first title, and is the debut work of scenario writer Gen Urobuchi.
Release schedule
The store page opened on August 7, 2026, confirming the September 4 release date, after a January 1 announcement of the port.

Timeline

Synthesized by Yomimono from the cited Yomimono stories below, each itself sourced, then editorially reviewed. Every fact links the story it came from.

Facts

Announced
Steam release of Phantom of Inferno (August 7) · 2026-08-11

Connections

Structured graph also available as JSON at /public/entities/nitroplus. CC BY 4.0.

Claim activity

When a claim about Nitroplus was confirmed, debunked, or disputed against open-web sources. The record stays even after a claim drops off the facts list.

  • Confirmed Steam release of Phantom of Inferno Sep 14 · source

All coverage

Sep 14

Dolls Nest Unknown Armored Soldier Gets PLAMATEA Model Kit

Nitroplus's 3D action game Dolls Nest is getting a PLAMATEA assembly-type plastic model of the Unknown Armored Soldier, the enemy that stands in the player's way. Preorders are open on Rakuten Books at 11,031 yen including tax, against a reference price of 12,799 yen. The kit includes the assault rifle AR102 A2 Gladius, the railgun Femt, and ML32v5 Cetus missiles, with a stand and interchangeable hands.

Sep 10

Nitroplus To Add Combat Test Mode To Dolls Nest In October 2026 Update

Nitroplus announced on September 10 that a free major update for the PC (Steam) action game Dolls Nest will arrive in October 2026, adding the feature Combat Test. Players fight training units in arena-style content, and a combat skill grade rises with the number of units destroyed. Reward items come according to that grade. The feature will be playable at Tokyo Game Show 2026, though that trial build differs from the retail version.

Sep 4

Phantom PHANTOM OF INFERNO, Gen Urobuchi's Debut Work, Launches on Steam

Nitro Origin released Phantom PHANTOM OF INFERNO on Steam today, September 4. The hardboiled text adventure, originally Nitroplus's first title from 2000, is the debut work of scenario writer Gen Urobuchi. The Steam version matches the 2013 PC reverse port, which added TV anime elements. It supports Japanese, English, and Simplified Chinese, with full Japanese voice. Price is 3500 yen.

Aug 11

Phantom of Inferno Visual Novel Slated for Steam on September 4

Nitroplus' Nitro Origin label announced on August 7 that the 2000 visual novel Phantom of Inferno will launch on Steam as Phantom: Phantom Inferno on September 4. The release matches the 2013 PC port's content, with Japanese audio and English, Simplified Chinese, and Japanese text support.

Aug 7

Gen Urobuchi Debut Work Phantom PHANTOM OF INFERNO Hits Steam September 4

Nitro Origin, the brand behind Nitroplus, announced on August 7 that the Steam version of Phantom PHANTOM OF INFERNO will launch on September 4. The visual novel, priced at 3,500 yen including tax, supports Japanese, English, and Simplified Chinese text, with Japanese-only voice. The game is based on the 2000 adult PC release, which was Nitroplus's first title and the debut work of scenario writer Gen Urobuchi, later known for Puella Magi Madoka Magica and Fate/Zero. The story follows Reiji Azuma, a boy on a solo trip to America who witnesses an incident and learns the true identity of Phantom, the organization's strongest assassin, is a girl his age. After being abducted and having his memories erased, he is trained in assassination techniques and becomes one of the organization's top killers, eventually drawn into internal conspiracies. The Steam version is based on the 2013 PC port that added TV anime elements, and the official website states there are no changes to the game content. The store page opened on August 7, confirming the release date, following a January 1 announcement of the port.