Heavenly Guardian is an action/shooter game developed for Sony's PlayStation 2. It successfully combines elements of classic arcade shooters and adventure games, while presenting them in a unique style of its own. Players take on the role of Sayuki, a courageous ice princess, on a quest to save the person she cares for the most from a mysterious illness. To achieve her goal, she must travel across diverse landscapes battling mythical creatures with different weapons, mostly ice-based. Besides action, the game includes puzzles, upgrades, boss battles, and multiple levels to enhance the gameplay experience.