Geojisui Yunmugok (거짓수 윤무곡, 虚実運動曲) is a Nintendo DS game developed and published by South Korean game company Neowiz in 2008. It is an action-adventure game that follows an adventurous hero as he battles monsters, solves puzzles, and explores dungeons. The game features an open world environment and allows players to customize their characters with different weapons, armor, and spells. The game's story follows a young hero named Yoon-Mugok, who is tasked with rescuing his village from a mysterious force. Players will explore dungeons, battle monsters, solve puzzles, and complete various side quests. The game also features a unique card-based battle system, where players must combine the game’s cards to create powerful spells and attacks. Players can also customize their characters with different weapons, armor, and spells. The game also features an item and equipment system, where players can find and equip various items to help them on their journey. The game also features an online mode, where players can compete against each other and trade items. Geojisui Yunmugok is a fun and engaging action-adventure game that offers an immersive open world experience. With its unique card-based battle system, customizable characters, and online mode, the game offers hours of entertainment.