Games like Umineko no Naku Koro ni Saku: Nekobako to Musou no Koukyoukyoku

If you finished Umineko no Naku Koro ni Saku: Nekobako to Musou no Koukyoukyoku, the closest matches are Reveil, Slender Threads, Corpse Party II: Darkness Distortion, Your Turn to Die: Death Game by Majority and The House in Fata Morgana: A Requiem for Innocence. All 7 share its adventure genre and are ranked by how closely their themes and modes overlap.