Flash Focus: Vision Training in Minutes a Day is a brain training game for the Nintendo DS, developed by Nintendo and released in 2007. As an edutainment title, it falls within the puzzle and simulation genres, offering a series of mini-games designed to improve users' visual abilities, such as eye movement, hand-eye coordination, and peripheral vision. Developed in collaboration with ophthalmologist Hisao Ishigaki, the game utilizes quick, engaging activities to test and train the eyes in sessions that track progress over time, fostering sharper visual acuity through consistent, focused play.