Shikura brought up the concept of a Steins;God game in a Famitsu interview in September 2018,[7] and Science Adventure series producer Tatsuya Matsubara teased that a new game in the series was in development by February 2019.[11] The game was eventually announced by Mages during their business strategy presentation in October 2020, as part of a celebration of the original Steins;Gate's tenth anniversary, with the second half of the title obscured;[1][6][12] at the time, Shikura had finished planning a large amount of the game's story sequences.[6]

In a November 2024 interview, Matsubara stated that concepts for Steins;??? were in the process of being put together.