The Nexus 7, made by Asus in partnership with Google, was the first really successful Android tablet that wasn't made by a bookseller. It brought the hundreds of thousands of games and apps on Google Play (formerly the Android Market) to a wide audience, and it did so at an unheard-of price point: Only $199, for a device packing a Tegra 3 processor which made it much more powerful (and better for gaming) than Amazon's Kindle Fire.