Entertainment Software Publishing (ESP) served as the publisher for several acclaimed titles, including Grandia, Silhouette Mirage, Slayers Royal, and Radiant Silvergun. The company also published Gungriffon II and Maho Gakuen Lunar, and would later become known for publishing games in the Hajime no Ippo boxing franchise.
Established to support prominent Japanese developers, the publisher focused heavily on Sega Saturn and PlayStation releases during the late 1990s. This era was defined by the 1997 launches of
Grandia,
Silhouette Mirage, its promotional
Silhouette Mirage [Demo],
Slayers Royal, and
Maho Gakuen Lunar. These titles, alongside 1998's
Gungriffon II, its
Gungriffon II [Limited Edition], and the shoot-'em-up
Radiant Silvergun, established the company's reputation for handling high-quality genre pieces. Within the broader ecosystem of these releases, they helped secure the financial and operational footing that allowed the publisher to transition into major anime-based adaptations, most notably anchoring their legacy within the
Hajime no Ippo franchise.
By managing the distribution of these specific 1997 and 1998 titles, the company fostered close relationships with development studios like Game Arts and Treasure. The success of
Grandia and
Radiant Silvergun in particular proved the viability of niche, high-concept games, paving the way for the publisher's later specialization in sports and anime adaptations under the
Hajime no Ippo banner.