Games like Gemini City: Science and Magic

If you finished Gemini City: Science and Magic, the closest matches are Chrono Alice, Ripple no Tamago: Apprentice Magician, Hyakki Yakou: Kaidan Romance, Tokimeki Factory Vol.1 and Tokimeki Factory Vol.2. All 9 share its visual novel genre and are ranked by how closely their themes and modes overlap.