Smart Kids Gameclub is the best DS game for toddlers. It is easy peasy for a toddler to play with various challenging and educational activities. It is separated into two rooms-Girl's Playroom and Boy's Playroom. My daughter began playing this when she turned two and it remains her favorite game. There are so many activities and games. The harder ones she can learn to play as she grows. I can say she has improved in these areas: hand eye coordination, problem solving, counting, and memorization.

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Check out my full review at Sazze.com: http://www.sazze.com/products/smart-kids-gameclub-for-ds