Games like A Mallard's Song

If you finished A Mallard's Song, the closest matches are Schrödinger's Call, Tokyo Chronos, Inescapable: No Rules, No Rescue, Tsuki ni Yorisou Otome no Sahou and Café Stella and the Reaper's Butterflies. All 8 share its adventure genre and are ranked by how closely their themes and modes overlap.