Carmen Sandiego is back and only you can foil her V.I.L.E plans. Travel the globe, solve brain-twisting math puzzles, and finally confront the world's greatest thief. Crack the case of the Island of Diamonds in single-player Story Mode. Perfect your math skills in single-player Practice Mode. Challenge your friends and family to solve math puzzles against the clock in Multiplayer Mode. In Carmen Sandiego Adventures in Math: The Island of Diamonds, you practice your math skills and use them to fight crime. Ideal for grades 4-5, math topics include arithmetic, logic puzzles, fractions and much more!