"Fantasy Defense Chronicle Plus" is a defense game-style idle game where you collect and nurture characters from the Touhou Project to defeat monsters. Updates from the previous version include increased unlockable characters, lighter processing, UI enhancements, and system adjustments.

In the combat screen, players can tap to shoot bullets and attack enemies, with Touhou characters joining in the attack. By defeating enemies, you earn money, but beware as if a boss reaches the bottom, your power bonus drops to 0%. Occasionally, enhanced individuals appear, offering more money when defeated.

The game also features character enhancements and unlocks, the ability to change character skins, various in-game items like stones for temporary boosts, character gacha for enhancements, and skins for character images.