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Japanese adult visual novel brand of Robo Planning, originally founded as HOOK in 2000 and renamed HOOKSOFT in 2008.

Last updated September 26, 2026

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Overview

Hooksoft is a Japanese video game brand that develops romance adventure games, primarily adult visual novels. According to the Chinese Wikipedia entry, it is the game brand of the Japanese company Robo Planning (ロボプランニング). The brand was originally named HOOK and was established in April 2000; it was reorganized and renamed HOOKSOFT on December 2, 2008. Its sister brands include SMEE, ASa Project, TJR and Tily, and it is currently a member of the Partner Brand (パートナーブランド) alliance. The official website at hook-net.jp presents the brand's storefront and information hub, and includes an age-restriction notice barring access to persons under 18, consistent with the adult nature of its titles. The site also lists recommended browser and display specifications, reflecting a typical Japanese PC game publisher's web presence. Hooksoft's catalog centers on romance adventure games (恋愛アドベンチャー), a genre in which the player interacts with characters and progresses through branching narrative routes. While the brand operates mainly in the Japanese domestic market, its titles are known within the global visual novel community, and its association with Partner Brand indicates participation in a cooperative marketing and distribution framework used by several adult game makers in Japan. As a brand rather than a separately listed company, Hooksoft does not have its own stock listing; it operates under the privately held Robo Planning. The brand remains active, with its official site serving as the primary channel for product announcements and releases.

History

Hooksoft traces its origins to the brand HOOK, established in April 2000 as a developer of romance adventure games. The brand operated under this name for most of the 2000s, building a catalog of adult visual novels aimed at the Japanese PC market. On December 2, 2008, the brand was reorganized and renamed HOOKSOFT. It is the game brand of the Japanese company Robo Planning (ロボプランニング), and its sister brands include SMEE, ASa Project, TJR and Tily. The brand is also a member of the Partner Brand (パートナーブランド) alliance, a cooperative framework among Japanese adult game makers. Its official website, hook-net.jp, serves as its main information and distribution portal and carries an age-restriction notice for visitors under 18.

  • 2008

    Reorganized and renamed HOOKSOFT on December 2.

  • 2000

    Brand established as HOOK in April.

Products and positioning

Adult romance adventure game brand within the Japanese visual novel market, affiliated with the Partner Brand alliance.

Product categories. Adult romance adventure games (visual novels)

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