Biz Nouryoku DS Series - Miryoku Kaikaku (ビズ能力DS シリーズ魅力改革) is a puzzle game developed by Nintendo for the Nintendo DS platform. The game features over 200 puzzles, all of which are designed to test the player's logical thinking, memory, and problem solving skills. Players must use their brains to solve the puzzles in order to move on to the next level. The game also includes a tutorial mode, which helps players learn the basics of the game. The game also includes a score attack mode, which allows players to compete against each other in timed challenges. The game also has a variety of mini-games and bonus levels which can be unlocked by completing certain tasks. The game has an intuitive user interface, which makes it easy to navigate and play. Biz Nouryoku DS Series - Miryoku Kaikaku is an enjoyable and challenging puzzle game for all ages.