Back in March 2019, publisher ATLUS and developer Vanillaware released 13 Sentinels: Aegis Rim Prologue, a paid trial of the 13 Sentinels: Aegis Rim full game experience.

The “Extras” section of the in-game menu did include one notable bonus though—a teaser trailer for Vanillaware’s next all-new title.

Now, speaking with Nintenderos about the upcoming western release of GrimGrimoire OnceMore, Vanillaware co-founder George Kamitani says that the long-in-development title is both at the end of development and set to be one of Vanillaware’s biggest games yet.

“In March 2019, for reasons I won’t get into, we released only the prologue of 13 Sentinels: Aegis Rim, but it did include a video of our next title in it,” Kamitani said.

While I’m not the director of that title, it’s one of Vanillaware’s biggest productions, so please look forward to it.”

Kamitani continued, “Lastly, the title I’m working on right now won’t be finished for several years, but once that big title I’m telling you about is finished, I should get some development staff, so development of my project will finally move into full swing.”