ONE PIECE Grand Gourmet Developer: Kairosoft Co., Ltd and the Bandai Namco Partnership

The Short Answer: Who Holds the ONE PIECE Grand Gourmet Developer Credit

The ONE PIECE Grand Gourmet developer is Kairosoft Co., Ltd, and that single credit explains most of what this game is. Kairosoft is building the title; Bandai Namco Entertainment Inc. is publishing it. That split matters because it tells you the project is a cozy, systems-driven management sim rather than another punch-and-slash Straw Hat adventure.

If you are weighing a pre-order, understanding who holds the ONE PIECE Grand Gourmet developer credit — and who controls publishing, platforms, and pricing — is the fastest way to judge what actually ships on launch day.

Both official listings agree on the name:

• The ONE PIECE: Grand Gourmet Steam store page lists "Kairosoft Co.,Ltd" as developer and "Bandai Namco Entertainment Inc." as publisher.
• Bandai Namco's official ONE PIECE: Grand Gourmet game page repeats the same developer credit in its release information block.

No other studio is credited on either page. If you have seen speculation that an internal Bandai Namco team is handling development, the official listings do not support that.

Developer and Publisher at a Glance

The table below collects only what the official product pages state, with the observation date attached so the numbers stay honest as the launch window moves.

Two things stand out. First, the ONE PIECE Grand Gourmet developer credit sits on a studio known for simulation-style design, and the official feature list backs that up with crafting, decorating, and customer-retention loops rather than combat. Second, the publisher is handling a multi-platform rollout whose dates vary by source and region: Bandai Namco Entertainment Asia lists Switch and Switch 2 for October 22, 2026 and PC/mobile for October 23, while Bandai Namco Entertainment America lists October 23 across its platforms.

What the Developer Credit Actually Promises in the Game

Kairosoft's name on the box sets expectations, and the official descriptions match them closely. You play as a rookie staff member aboard Baratie Number Two, the second location of the floating Baratie restaurant, and your job is to grow it into the best dining spot on the sea.

The core loop, as described by both official pages and the announcement trailer, breaks down like this:

• Cook with Sanji. Character ideas inspire dishes; you pick ingredients and assemble meals.
• Build meal sets. Add flourishes and garnishes, then plate the set so it looks worth ordering.
• Use Devil Fruit powers. Special dishes are created by leaning on Devil Fruit abilities, an idea the announcement trailer highlights directly.
• Collect and expand. Hunt ingredients, discover recipes, and grow the restaurant's fan base.
• Decorate. Over 200 furniture, building, and decorative items, ranging from Whole Cake Island dessert themes to Egghead-era pieces.
• Meet the cast. The trailer promises over 400 characters to discover, and characters who like your design may become regulars.

Named dishes on the official pages include Water-Water Meat BBQ and Sea King Penne Gorgonzola. That mix — canonical food plus absurd, power-assisted cooking — is the clearest fingerprint of the ONE PIECE Grand Gourmet developer's approach: systems first, spectacle second.

Platforms, Price, and Launch Timing

Release information is where the sources need careful reading, because the two official pages do not state the same calendar date.

• Steam lists the release as Oct 22, 2026, with an upcoming-release notice pointing to an unlock at 10:00 PM UTC on October 22, 2026, as observed on 2026-10-21.
• Bandai Namco Entertainment America’s site and the June 2026 announcement trailer give October 23, 2026 as the originally announced date.

Those two statements use different source scopes. Steam’s 10:00 PM UTC timestamp is Steam-specific, while Bandai Namco Entertainment Asia separately lists Switch/Switch 2 on October 22 and PC/mobile on October 23. Check the storefront for your platform and region.

Other dated details from the same 2026-10-21 snapshot:

• Price: $19.99 for the Digital Standard Edition on Steam, listed as a pre-purchase option at the time of capture. Prices vary by platform and region, so confirm on your storefront.
• Languages: Interface support for 12 languages, including English, Japanese, French, Italian, German, both Spanish variants, Thai, Brazilian Portuguese, and both Chinese scripts. The Steam table shows interface support only — no full audio or subtitle columns are filled in.
• Features: Single-player, Steam Achievements, Steam Cloud, and Family Sharing, plus Xbox and PlayStation controller support and the Steam Input API.
• Rating: Steam showed "RP – Rating Pending" while Bandai Namco's page listed descriptors for Mild Fantasy Violence and Alcohol Reference.

What the Community Noticed Before Launch

Pre-release chatter is worth separating from official information, so treat this section as community reports rather than confirmed specs.

A game-developer creator who broke down the announcement trailer described the presentation as pixel art rendered at flexible pixel density, with a diagonal camera angle he argued saves production work on sprite directions. He also flagged the tonal shift: the ONE PIECE Grand Gourmet developer is not competing with the series' fighting games, and he called the result "lighthearted" and "very chill." That is one creator's read of a trailer, not a review.

Comments under IGN's announcement coverage showed a similar instinct, with readers reaching for co-op cooking comparisons. The official listings do not support that: Bandai Namco's page lists the game as single-player, and Steam's feature block lists no multiplayer or co-op support. If couch co-op is a dealbreaker, the paperwork says to keep expectations in check.

The announcement itself dates to June 9, 2026, per Bandai Namco's news post about the game's reveal.

Why the Developer Choice Shapes Your Buy Decision

Kairosoft's involvement is the strongest signal in the entire marketing cycle. The ONE PIECE Grand Gourmet developer credit points to a menu of interlocking systems — recipe discovery, meal-set assembly, décor combos, regulars, and reputation growth — rather than a short cinematic campaign.

That means the value question is really about how much you enjoy optimization loops. The 400-plus characters and 200-plus décor items suggest a long tail of collection and customization, which is a management-sim promise, not an action-game one. If you want a slow, decorative grind set in the One Piece world, the ONE PIECE Grand Gourmet developer credit lines up with your taste. If you want combat, this is the wrong ship.

FAQ

Who is the ONE PIECE Grand Gourmet developer? Kairosoft Co., Ltd holds the ONE PIECE Grand Gourmet developer credit on both the Steam store page and Bandai Namco's official site, as observed on 2026-10-21.

Does the developer also publish the game? No. Bandai Namco Entertainment Inc. is listed as publisher on both official pages, while Kairosoft Co., Ltd is listed only as developer.

Which platforms and price were listed? Bandai Namco lists Nintendo Switch, Nintendo Switch 2, PC via Steam, the App Store, and Google Play. Steam showed a $19.99 pre-purchase price for the Digital Standard Edition as of 2026-10-21; regional pricing varies.

When does it launch? Steam listed an October 22, 2026 unlock timestamp, while Bandai Namco Entertainment America lists October 23, 2026 and Bandai Namco Entertainment Asia splits Switch/Switch 2 on October 22 from PC/mobile on October 23. Check the storefront for your platform and region rather than treating the difference as only a time-zone conversion.