In a recent interview, the developers from Shift Up, Director Hyung-Tae Kim and Technical Director Dongi Lee, talked to journalist Julien Chièze and discussed Stellar Blade and its development.
According to Shift Up, Sony approached them in 2021 after legendary Shuhei Yoshida showed interest in the game's prototype. The collaboration with Sony has been significant, with the company providing lots of support to the studio. This support includes full localization, marketing, testing, and sharing tools from internal PlayStation studios with the developers.
Thanks to Sony's help, Stellar Blade was localized in 22 languages. The demo version features voice acting in 9 languages and subtitles in 22. Initially planned as a small game, the partnership with Sony led to a substantial expansion of the project.