Games like G-Mode Archives 41: Izumi Jiken File Vol. 1 - Shiosai-hen

If you finished G-Mode Archives 41: Izumi Jiken File Vol. 1 - Shiosai-hen, the closest matches are AI: The Somnium Files - Nirvana Initiative, Tantei Jinguji Saburo: Kiken na Futari, Murder Detective: Jack the Ripper, 1BeatHeart and Tsuki wa Kirisaku: Tantei Sagara Kyouichirou. All 6 share its visual novel genre and are ranked by how closely their themes and modes overlap.