What Attack on Titan mobile games were there?
Attack on Titan Tactics (developed by KAYAC, published by DeNA) launched in Japan in 2019 and in English that September: a real-time strategy game of squads holding lanes against walking Titans. Its service ended in August 2020, under a year into its Western life. Attack on Titan: Assault (GameSamba) also dates to 2019, a team-building RPG in the crowded late-2010s licence wave.
The substantial one is Attack on Titan: Brave Order, enish’s cooperative smartphone RPG, which launched in Japan on 11 February 2022, never opened a global server, and ended service on 28 September 2026. Four and a half years is a long life for the genre, and its closure closes the category: as of this page, every Attack on Titan mobile game is defunct. The lesson for collectors is the medium itself: service games leave no shelf object, only storefront pages, trailers, and pages like this one. What survives of Tactics and Brave Order survives as writing.