Add New Apps from the Windows 8 Store App
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Sort by subcategory, price, and noteworthiness; and choose apps that look interesting.
For example, you can sort by subcategory, limiting the Games category to show only Card games.
Some categories also let you sort by price, and you can choose Free, Paid, or Trial. And if you sort by noteworthiness, Microsoft shows you which apps are either Newest, have the Highest Rating, or Lowest Price. (Hedge fund managers may sort by Highest Price, as well.)