Keep your mind sharp and agile with the classic mental workout, **Brain Age: Train Your Brain in Minutes a Day! for Nintendo DS (2006)**! Inspired by the renowned neuroscientific research of Dr. Ryuta Kawashima, this legendary touch-screen puzzle game challenges your mental agility with fast-paced math calculations, reading speed trials, Stroop color tests, voice recognition exercises, and over 100 Sudoku number puzzles. Designed to be held sideways like an open book, it offers personalized daily tracking to calculate your "Brain Age." In Excellent Used Condition (EUC) and Complete in Box (CIB) with the original case, cover art, and instruction manual. Fully tested and working on all Nintendo DS, DS Lite, DSi, 2DS, and 3DS family systems! **Complete in Box (CIB):** Includes authentic Nintendo DS cartridge, case, and manual. **100+ Brain Training Puzzles:** Quick calculations, Stroop tests, reading aloud & Sudoku. **Fully Tested & Working:** Game boots immediately, reads smoothly,