13 Sentinels: Aegis Rim Prologue teases unannounced VanillaWare project [Update]

The “Extras” menu in the newly released 13 Sentinels: Aegis Rim Prologue includes a trailer labeled “????” that teases an unannounced, Atlus-published VanillaWare project.

Here is the trailer:

Back in September 2017, VanillaWare was hiring programmers and designers for work on 13 Sentinels: Aegis Rim, as well as a second, unannounced project.

13 Sentinels: Aegis Rim Prologue launched for PlayStation 4 today in Japan. It features the first three hours of the full game, which is due out this fall in Japan. A western release is also planned, but has yet to be dated.

Thanks, Persona Central.

Update 11:26 p.m.: A newly published gameplay video of 13 Sentinels: Aegis Rim Prologue featuring freelance writer Mafia Kajita confirms (at 12:09) that details on the new project will be announced after the completion of 13 Sentinels: Aegis Rim. Watch that below.