Bisanggu - Exit DS (Korea) [b], ビサング - EXIT DS (日本), is a puzzle-adventure game developed by H2 Interactive Co. Ltd. and released exclusively in South Korea in 2008. The game follows the adventures of a young girl named Yoo-Jin, who is trying to find her way out of a mysterious castle. Players must solve puzzles, explore the castle and its many rooms, and find the exit. Along the way, they will encounter various monsters and obstacles which must be overcome. The game features two different modes: 'Adventure' mode, which follows the story of Yoo-Jin, and 'Challenge' mode, which requires players to complete levels as quickly as possible. The game also features a variety of minigames and mini-quizzes, designed to test the player's knowledge of the game. Bisanggu - Exit DS is a unique and entertaining puzzle-adventure game which will challenge both casual and hardcore gamers alike. With its charming visuals, challenging puzzles, and engaging story, Bisanggu - Exit DS is a great game for anyone looking for a unique and enjoyable experience.