Touhou Danmaku Kagura - Phantasia Lost is an officially approved derivative rhythm action game from the Touhou Project universe. The game offers two main modes: Story Mode, where players can unravel the mysteries of the destroyed Gensokyo through rhythm gameplay, and Free Mode, which allows for endless rhythm challenges. With a total of 171 songs, including 68 from the main game and 103 additional tracks available through DLCs, players have a vast musical library to explore.