Games like Intruder: Sakura Yashiki no Tansaku

If you finished Intruder: Sakura Yashiki no Tansaku, the closest matches are Sexy Beach 3, Oppai Slider 2, Artificial Girl 3, 3D SexVilla 2: Ever-Lust and Premium Play Darkness. All 7 share its adventure genre and are ranked by how closely their themes and modes overlap.