Games like Derrat Sorcerum

If you finished Derrat Sorcerum, the closest matches are Atlantis 2: Beyond Atlantis, King's Quest III: To Heir is Human, King's Quest IV: The Perils of Rosella, Lost Chronicles of Zerzura and Beyond the Legend: Mysteries of Olympus. All 6 share its point-and-click genre and are ranked by how closely their themes and modes overlap.