戦姫絶唱シンフォギアXD UNLIMITED is a free-to-play Symphonic Battle RPG game available only on iPhone. Developed by KING PAWN INC., this game is a must-play for those who love RPG, action, and music. Based on the anime series "Senki Zesshou Symphogear," this game features original stories and music unique to this game. The game offers several features, including Symphonic Battle, Main Quests, Side Quests, and Event Quests. You can play with different characters from the anime, each with their unique songs and abilities.

The game's main feature is the Symphonic Battle, where you can use songs to unleash powerful attacks. You can also collect various songs and make them your music box. The game also offers a Battle Arena where you can battle against other players' parties. The game's simple controls make it easy to play, and the game is free to download. Join the girls of Symphogear and fight against the threats that endanger the world in this exciting RPG game.