LTL4 錯綜の渦ep.0 is the fourth installment of the LOOP THE LOOP series, an adventure game developed by sweet ampoule for Android devices. It is recommended to read the previous games in the series in order. The game contains some graphic and grotesque descriptions, but it is completely free to play.

The game follows the story of the twisted world of "錯綜の渦" and "飽食の館," and the path to "藝術家の庭." The game is a continuation of the popular mystery visual novel game series "LOOP THE LOOP," which gained popularity on mobile, PC, and Android devices. sweet ampoule is a team that creates visual novels and adventure games, including LTL series, Dreaming Briar Roses, White Bored, Cat Park Waiting, and Devil's Whisper series. The game is only available for touch screen devices that support the Japanese language.