Agony is a first-person survival horror game that plunges players into the harrowing depths of hell. The narrative begins with the player as a tormented soul, devoid of memories from their past life. As players navigate through the hostile environments and engage with other suffering souls, they will uncover the path to escape through the enigmatic Red Goddess. This immersive experience is characterized by its dark storytelling and challenging gameplay.

The game features a unique mechanic that allows players to control and even possess simple-minded demons, which is essential for survival in the brutal conditions of hell. It offers a Story Mode to explore the intricate plot and a challenging Agony Mode that tests players' skills with heightened difficulty. Agony combines atmospheric horror with engaging gameplay elements, making it a notable title in the action genre.