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Cellius

Defunct Japanese video game developer and publisher established as a Sony–Bandai Namco joint venture.

Last updated August 25, 2026

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Overview

Cellius Inc. was a Japanese video game developer and publisher headquartered in Shibuya, Tokyo. It was established in 2007 as a joint venture between Sony and Bandai Namco Holdings, with Bandai Namco holding 51 percent and Sony holding 49 percent. The company was created during the PlayStation 3 era, when Sony was seeking stronger software support and broader use of its Cell microprocessor, the technology at the center of the PlayStation 3 hardware platform. The venture was also intended to help Sony compete more effectively with Microsoft and Nintendo by developing software for PlayStation systems as well as for mobile phones and personal computers. Ken Kutaragi, a central figure in the creation and development of the PlayStation platform, was announced as Cellius's chief executive officer. His involvement connected the new company with Sony's PlayStation hardware strategy and with the technical ambitions surrounding the Cell processor. Cellius was not positioned as a conventional mass-market publisher with a large established portfolio; rather, it was formed as a strategically oriented development company intended to combine Sony's platform and technology interests with Bandai Namco's software-development and publishing capabilities. The company's publicly associated projects included Misato Katsuragi's Reporting Plan for PlayStation 3 and a Ridge Racer title for PlayStation Vita. These projects reflected two aspects of Cellius's intended remit: creating software linked to established entertainment properties and supporting PlayStation hardware with platform-specific games. The company also planned to develop games for mobile phones and personal computers, although the available reference material does not document a substantial commercial catalogue across those platforms. Cellius ultimately ceased operations and is generally treated as a defunct studio. Existing dossier material places its dissolution in 2012, but the cited reference excerpt does not provide detailed information about the closure process, the disposition of its projects, or the transfer of its personnel and intellectual property. Consequently, Cellius is best understood as a short-lived Japanese joint-venture game company whose significance lay more in its corporate purpose and connection to Sony's PlayStation strategy than in a large body of released products.

History

Cellius emerged from the close relationship between Sony's PlayStation business and Bandai Namco's game-development and publishing operations. The company was founded in 2007 as a joint venture, with Bandai Namco Holdings owning 51 percent and Sony owning 49 percent. Its creation came at a time when Sony was attempting to strengthen the software position of the PlayStation 3 and improve its competitive standing against Microsoft's Xbox business and Nintendo's platforms. The venture was also associated with Sony's Cell processor strategy. The Cell microprocessor served as a core component of the PlayStation 3, and Cellius was intended to develop software that made use of the technology. Its planned scope extended beyond the PlayStation 3 to games for mobile phones and personal computers, suggesting that the company was conceived as a cross-platform development operation rather than solely as an internal console studio. Ken Kutaragi was announced as Cellius's chief executive. His appointment gave the company a senior executive closely identified with the PlayStation platform and with the technical direction of Sony's console business. The corporate structure, meanwhile, gave Bandai Namco a majority stake, combining Sony's platform interests with Bandai Namco's experience in game production and publishing. Cellius's publicly documented projects included Misato Katsuragi's Reporting Plan on PlayStation 3 and a Ridge Racer project for PlayStation Vita. The former was tied to an established Japanese entertainment property, while the latter connected the company to Sony's next-generation handheld platform. These projects indicate that Cellius was expected to support PlayStation-specific software across successive hardware generations. However, the available reference material does not establish a broad catalogue of completed releases or provide detailed sales and reception data. The studio was dissolved in 2012 according to the existing dossier material and is now treated as defunct. The available sources do not explain in detail why the company closed, whether its projects were cancelled or transferred, or how its staff and assets were handled afterward. Cellius therefore occupies a limited but notable place in video-game business history: it was a short-lived Sony–Bandai Namco experiment built around platform competition, joint development, and the proposed commercial use of Sony's Cell technology.

  • 2012

    The company is dissolved

    [1]

    The existing dossier identifies 2012 as the year Cellius ceased operations.

  • 2007

    Cellius is established

    [1]

    Sony and Bandai Namco Holdings establish Cellius as a joint-venture game developer and publisher. Bandai Namco holds 51 percent and Sony holds 49 percent.

  • 2007

    Ken Kutaragi becomes chief executive

    [1]

    Ken Kutaragi is announced as the company's chief executive, connecting Cellius with Sony's PlayStation leadership.

  • PlayStation projects are identified

    [1]

    Cellius is associated with Misato Katsuragi's Reporting Plan for PlayStation 3 and a Ridge Racer title for PlayStation Vita.

Products and positioning

A strategically oriented Japanese game developer and publisher created to support Sony's PlayStation software ecosystem and exploit the Cell processor across console and other platforms.

  • PlayStation 3 video game

    Misato Katsuragi's Reporting Plan

    A Cellius-associated PlayStation 3 project centered on Misato Katsuragi, a character from the Evangelion franchise. It represents the studio's planned focus on PlayStation-specific software and on games connected to established Japanese entertainment properties. The available reference material identifies the project but does not provide sufficient information about its release status, commercial performance, or detailed gameplay.

  • PlayStation Vita video game

    Ridge Racer

    A Ridge Racer project associated with Cellius and the PlayStation Vita. Its connection to a major Namco racing series reflects the role the joint venture was expected to play in supporting Sony hardware with recognizable software properties. The available reference material does not establish the exact release details, development responsibilities, or commercial outcome of the project.

Brand decisions

  • 2007

    Create a joint venture focused on PlayStation softwareStrategy

    Background

    Sony sought stronger software support for PlayStation and a more effective competitive response to Microsoft and Nintendo. The venture was also intended to explore games using Sony's Cell processor and to extend development into mobile and personal-computer markets.

    Action taken

    Sony and Bandai Namco Holdings established Cellius, with Bandai Namco taking a 51 percent stake and Sony retaining 49 percent.

    Aftermath

    Cellius was associated with projects for PlayStation 3 and PlayStation Vita but was later dissolved, reportedly in 2012.

Sources1 sources

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