Games/Tristia Doki-doki Operation/FranchiseTristia Doki-doki Operation·, 2003 · Kogado StudioMore in this franchiseBack to gameSort: Release dateTristia: Legacy2023Tristia: Restore2023Aoi Sora no Neosphere Doki-doki Adventure Effective E2005Aoi Umi no Tristia: Nanoca Flanka Hatsumei Koubou ki2005Aoi Sora no Neosphere2003Aoi Umi no Tristia: Hatsumei Koubou Funtou ki2002More about Tristia Doki-doki OperationPlayer reviews