Two of the game's core themes are eyes and different types and expressions of love. This is reflected in the game's title, AI: the word itself is pronounced "eye", and is derived from "ai" (愛), the Japanese word for love. The title also has additional meanings, namely how it's pronounced similar to the English word "I", and how the title is short for "artificial intelligence". Additionally, the word "somnium" in the game's subtitle is taken from the Latin word for "dream", in reference to how the game's plot involves entering dreams in order to solve cases.