"66 Confessions of St.Pinel Cathedral" is a game where you explore an ancient castle and search for anomalies. The game takes place in a Western-style old castle. As the player, you will explore the castle, shooting with a gun when you find an anomaly or ringing a bell if there is none, to progress through the game. There are a total of 66 different anomalies in the game, each with its own story. By discovering all the anomalies, you will unveil the shocking truth hidden within this world and about yourself. What is the true nature of this ancient castle? Who is the man that appears alongside the recurring anomalies? This is not just a game about finding anomalies but about uncovering the ultimate truth behind them.