Games like Hentai Girls: The Princesses

If you finished Hentai Girls: The Princesses, the closest matches are Tech Support: Error Unknown, OddFauna: Secret of the Terrabeast, Uncle Office: Uncle Dating Simulator, My Naughty Summer Vacation: Days in Countryside and Memories of Summer and Beta Decay. All 10 share its adventure genre and are ranked by how closely their themes and modes overlap.