Games like Family Project

If you finished Family Project, the closest matches are Ayakashi Yokocho no Natsuyasumi, My Life as a Vampire's Maid, Imouto Paradise! 2, Tsuki ni Yorisou Otome no Sahou and Muv-Luv Photonmelodies. All 7 share its adventure genre and are ranked by how closely their themes and modes overlap.