Axiom of Maria is an action-adventure game developed by Studio Ganzheit. The game follows the story of Kay, who possesses a supernatural power and battles the 15th AISOC, a government agency trying to control such powers. The game pursues fast, intense, and easy action, with sword and bike action features.

In 2074, the Korean population has fallen below 1 million due to population cliffs and infectious diseases. Government agencies and cities have begun to be managed by AI. Kay, an instructor for the 707th SMG, loses consciousness during training and wakes up to find herself and her daughter taken and locked up by the 15th AISOC. With the help of an institute that protects irregulars, Kay searches for her husband while battling hostiles and uncovering the story of AI gaining consciousness.