Battle of Souls: Fierce is an Android game developed by yuanyining07. The game is free and falls under the category of card games. The game is set in a world where the player assumes the role of a messenger of soul purification. The player is tasked with fighting fallen souls to ensure world peace for normal humans. The game also features a conspiracy initiated by the soul world that is quickly approaching the player.

The game's operating system is smooth, allowing for unlimited combos during fierce battles. The game features various heroes with unique skills that can be summoned to aid the player. Each hero's ultimate move has a unique 3D effect. Additionally, the game has a global server, allowing for real-time PVP gameplay and the opportunity to climb the leaderboard.