HBO is one of the most popular premium networks on TV, with shows like Game of Thrones and others. The channel has also launched an online and mobile app called HBO GO. This brings the content to your computer, phone or tablet. Now the network has arrived on Amazon Fire TV, the tiny set-top box that launched earlier this year. It’s a strong competitor to Roku and Apple TV. While arguably less capable than the former, it is also stronger than the latter in its offerings.