Pearl in Blue Is One Key Visual So Far, and the Playable Demo Lands September 17

Tokyo Game Show 2026 opens on September 17, and Netmarble will put a playable build of Pearl in Blue's opening section on the floor at Makuhari Messe. Until that build exists in front of players, the entire game is one picture.

Netmarble Japan Inc. revealed 『パールインブルー』 on July 20, 2026 at 18:00 JST. The teaser site and the official X account opened in the same minute, and what they carried was a single key visual. The release states it plainly: 「本日公開したティザーサイトおよび公式Xでは、本作のキービジュアルを初公開しております」. Seven Japanese and English outlets timestamp that reveal to July 20. None of them says July 28.

Everything else about this game has been described, not shown. The same release promises that 「今後は、登場キャラクターやゲームシステムなど…順次公開してまいります」, characters and systems in sequence, later. That gap between shown and said is the only honest way to read an announcement this early, so this piece keeps the two columns separate throughout.

What Netmarble actually published

The spec block has no region field, which is worth saying out loud because three outlets printed one anyway. What is official is a sentence of positioning, 「日本市場での新たな挑戦となるタイトル」, a new challenge in the Japanese market, plus a teaser site that serves only a /ja/ locale and a Japanese-language X account. Japan is a reasonable inference from those three things. It is not a confirmed region, and no statement exists about a global build in either direction.

There is also no official Chinese title. QooApp published the game as 《藍色真珠》 on July 20 and every aggregator downstream copied it, but Netmarble has never printed a Chinese name for this title in any material. The published names are 『パールインブルー』, Pearl in Blue, and the abbreviation パルブル.

The premise, in the words Netmarble used

A 「真珠（パール）」 is a desire hidden inside a person, materialised as power. The people who wield one are called 「騎士」, Knights. Those two nouns carry the whole setting, and they are the only pieces of worldbuilding the July 20 release commits to.

The night state of the teaser site: the same four heroines in Knight uniform, one with a lit blade. Netmarble has shown no character names, no voice cast and no gameplay to go with them.

The girls the player works with are 「殻っぽ」, read karappo according to Denfaminicogamer, which is the only outlet that printed a reading. It is a pun: 空っぽ means "empty", and the word is respelled with 殻, "shell". They are girls who cannot yet bloom a Pearl of their own. "Empty Shells" is our translation of that term and not Netmarble's, because Netmarble has published no English word for it at all.

The player is a マネージャー, a Manager, who guides the karappo and grows alongside them. The official X bio addresses its readers directly as 「新たに就任するマネージャー」, newly appointed Managers, which is a nice piece of copy and also the clearest statement of role the game has made.

One disclosed system is genuinely unusual and none of the English coverage carried it. The Knights work as influencers: 「『騎士』と呼ばれるインフルエンサーとして活躍するヒロインたち」, rendered in Netmarble's English newsroom as heroines who also serve as influencers. Squad-building sits on top of that, alongside 2D anime-inspired cinematic cutscenes and rom-com character-interaction content. How the influencer job interacts with combat, story or monetisation is undisclosed.

The teaser site argues the arc in art

The day state of the same background. The site loads this pair under a reveal mask and cross-fades one into the other, so the shell-to-Knight arc is stated in artwork before a single system is.

That day-to-night pair, keyed bgDayPc and bgNightPc in the site's own data, is the closest thing to a design statement Netmarble has made. Four girls in everyday clothes at a level crossing become four Knights in white under a moon. The site's background files were uploaded to Netmarble's CDN on July 14 and 16, four to six days before the reveal went live.

The signup form on that page is not pre-registration. It collects an email for 「チラチラ☆通信」, Chirachira Communication, delivered 不定期 and covering development status and character features, fronted by a mascot reporter named チラ. There is no 事前登録 form, no store pre-order and no reward ladder anywhere on the site.

Netmarble also named its own competitive set, in the page's <meta name="keywords">: ブルアカ (Blue Archive), メガニケ (NIKKE), アスオラ (Astrae Oratio) and プリコネ (Princess Connect). That is a publisher telling search engines which four games it wants to be compared to. Astrae Oratio is published by NCSOFT, and Netmarble is a major NCSOFT shareholder.

Netmarble N2 is a studio, and not a new one

N2 is not a showcase, an event or a product line. Netmarble N2 Inc. (넷마블엔투) is a development subsidiary with a corporate site at n2play.co.kr and offices in Guro-gu, Seoul. It was founded in 2011 as 엔투플레이, N2Play, and Netmarble acquired it in September 2014.

That is a board-game and MMO shop, so Pearl in Blue is a genre pivot rather than a debut. The July 21 release makes the internal split explicit by printing one copyright line per title: Shangri-La Frontier The Seven Colossi is Netmarble Nexus Inc., Solo Leveling: KARMA is Netmarble Neo Inc., and Pearl in Blue is Netmarble N2 Inc. Above all three sits Netmarble Corp., founded in Korea in 2000, parent of Kabam, SpinX Games and Jam City, and a major shareholder of both HYBE and NCSOFT.

Tokyo Game Show 2026 is the only dated hook

Netmarble Japan announced the TGS lineup on July 21, 2026 at 13:00 JST, one day after the reveal. Pearl in Blue is one of three titles on the stand, and what it brings is 「開発中のゲーム序盤を体験できる試遊版」: a playable version of the game's opening, described in the release itself as still in development. A themed booth and hands-on content are promised alongside it.

The venue is Makuhari Messe in Mihama-ku, Chiba, exhibition halls 1 to 11 plus the International Conference Hall and TKP Tokyo Bay Makuhari Hall, organised by CESA with Nikkei BP and Sony Music Solutions. Neither release prints a hall or a booth number for Netmarble; both say booth plans and stage programmes go up in stages on tgs.netmarble.jp, which opened July 21.

Shown, said, silent

Shown: one key visual, plus the day and night background pair on the teaser site and the logo. That is the complete inventory of Pearl in Blue imagery in existence.

Said but not shown: the monthly heroine cadence, the Pearl and Knight and karappo terminology, the Manager role, the influencer job, squad-building, 2D cinematic cutscenes, free-to-play with in-app purchases, iOS and Android.

Silent: no trailer, no PV, no gameplay footage, no screenshots, no character names, no voice cast, no staff credits, no release window, no age rating, no booth number. There is also no rarity system, no banner structure, no rate, no pity value and no monetisation detail beyond the free-to-play label. We are not going to model rates from Netmarble's other games, because a publisher's back catalogue is not evidence about an unannounced system in a different studio's title.

Three things will settle where this lands, and the first has a date. On September 17 the TGS build either shows combat and a gacha screen or it shows a visual-novel opening and nothing else, and that single demo is worth more than every line of copy above. Second, whether the newsletter converts into a 事前登録 page before TGS, since pre-registration opening is usually the tell that a launch window exists internally. Third, whether Netmarble opens a YouTube channel for the title at all: it printed one for each of the other two TGS games and deliberately printed none for this one.

FAQ

When was Pearl in Blue announced? July 20, 2026 at 18:00 JST, by Netmarble Japan Inc. The teaser site and the official X account went live together. Some coverage dates it to July 28, which is wrong.

When does Pearl in Blue release? No release date and no window. The official spec block lists the release as 未定.

Can I pre-register for Pearl in Blue? No. The teaser site takes email signups for a newsletter called 「チラチラ☆通信」, and that is the only form on the page. There is no pre-registration and no reward ladder.

Is Pearl in Blue coming to global or English servers? Nothing has been announced in either direction. All materials are Japanese, the site serves only a /ja/ locale, and Netmarble frames the game as a new challenge in the Japanese market. No official document names a region.

Is there a PC version? No. The spec block lists iOS and Android only, with no PC, console or cloud platform.

What are the gacha rates or the pity counter? Neither exists publicly. Netmarble has published no rarity system, no banner structure, no rate and no pity value. The only monetisation fact on record is 基本無料（アプリ内課金あり）, free-to-play with in-app purchases.

Who is developing Pearl in Blue? Netmarble N2 Inc., a Netmarble subsidiary founded in 2011 as N2Play and acquired in September 2014. It is not a new studio: it shipped Tower of God: New World worldwide in July 2023, and also made Everybody's Marble, HYPE SQUAD and RF Online Next.

What is a karappo? 「殻っぽ」, read karappo, is Netmarble's term for a girl who cannot yet bloom her own Pearl. It puns on 空っぽ, "empty", written with 殻, "shell". The English "Empty Shells" is a translation, not an official Netmarble term.

Can I play Pearl in Blue at Tokyo Game Show 2026? Yes, on the public days. A playable build of the game's opening is on the Netmarble stand from September 17 to 21 at Makuhari Messe, with public access on September 19, 20 and 21. The booth number has not been published.

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