is an adult-only visual novel that uses a "Groundhog Day" time-loop mechanic as its narrative backbone. The player takes on the role of a 20-year-old college student who must relive the same day repeatedly, navigating complex social and sexual relationships to uncover the mystery behind the loop. Core Gameplay Mechanics

: An in-game system provides guidance on how to progress through specific character quests. Lust Theory - Season 1 on Steam

: "Lust Time" refers to interactive sex scenes where players can change camera angles or trigger specific animations.

: Players repeat the day to unlock new events by making different choices. A fast-forward feature allows players to skip to specific times—morning, noon, evening, or night—to pursue specific character arcs.

: The game allows players to define their own relationships with the three women in the house (e.g., Mom and sisters as default).