Youjuu Senki -A.D. 2048- is not really a masterpiece at all, but without strong competitors I find it entertaining enough to be called VN of the September 1993.
A very weak month. But if choosing among ero-centered games, a mahjong game and an animated little masterpiece, I'd choose the last one. Houma Hunter Lime Dai 03 Wa is VN of August 1993.
Foreword: I do not believe in AliceSoft. As for me, they can only do that pornographic rapist Rance series over and over. So any work outside of Rance franchise is of interest to me to support or demolish this statement.
Cosmology of Kyoto publication month is unknown, so I just put it to February that had relatively few titles. Cosmology of Kyoto is the only masterpiece of February 1993 and thus VN of the month.
Doukyuusei and Koroshi no Dress 3 are the masterpieces of December 1992, but I just can't rate a good story game lower than a very good, but still nanpa game. Koroshi no Dress 3 is the VN of December 1992.
Foreword: I liked De-Ja a lot so sequel was a natural choice. Title: De-Ja 2 Original Title: デ・ジャ2 Developer: Elf Release Date: 1992-06-25 Summary: After events of De-Ja you're the winner in life. You have fame, respect, money and the love of pretty Gachako. What else to wish for? New adventures and unveiling new mysteries, of course. You get intrigued by the story of "crystal skulls" and one mad archaeologist knows exactly how to find them...