無敵の艦隊 is a turn-based naval warfare RPG available on iPhone, officially released on July 16. This game offers players the opportunity to collect hundreds of historically famous battleships, enhancing the collection experience. Players can join guilds to team up and take on powerful super battleships, adding a cooperative element to the gameplay.

The game features a variety of dungeons that introduce new mechanics, providing diverse combat scenarios. Players can also engage in player-versus-player battles in the arena to earn valuable loot. A mission system is included, allowing players to complete various tasks for rich rewards. Additionally, numerous release events are available, including increased construction rates for SSR battleships and free shipbuilding blueprints.