If you're a fan of animals, then you'll love playing Zoo Keeper on your Nintendo DS. This simple-but-cool game involves keeping a list of animals, of which there are many different types, together in a zoo. Each day, you must guide the animals through the challenges ofKeeps, and so on, by eating, talking to, and watchin' as they all progress. Though it may seem like a basic animal population problem, this game will engage you more fully than any traditional animal on the market.