Astellia M is a free-to-play role-playing game available on Android that immerses players in a medieval fantasy world filled with adventure and strategic gameplay. Players can explore vast continents and engage in epic battles across various realms, including the mortal world, the celestial realm, and the underworld. With five unique character classes—Knight, Assassin, Archer, Scholar, and Mage—players can experience a diverse range of combat styles and strategies.

The game features over 60 unique Astels, which are partners that assist players in battles and growth. Players can customize their decks to create their own combat styles and enjoy adventures across the world. Astellia M also offers large-scale PvP battles in the Coliseum and massive world siege events, where players can compete for glory and honor. As players join the Astell Expedition, they embark on a journey filled with captivating stories and thrilling challenges.