If you’re a fan of George R. R. Martin’s hit book series and accompanying TV show Game of Thrones, then you’ll want to download the official companion app. After coming to the iOS App Store last year, an Android version has been released just in time for the premiere of season 3 on HBO March 31st.

The “A World of Ice and Fire” app has a catalog of over 540 characters and 380 places. There’s also interactive maps of the different kingdoms to explore.

Barnes & Noble has launched its Nook Video service in the United Kingdom today, bringing digital movies and TV shows to its Nook HD and Nook HD+ tablets. In addition to fresh content from BBC Worldwide, HBO, Sony Pictures, Warner Bros. Entertainment, and more, users will gain access to UltraViolet versions of their existing DVD and Blu-ray purchases.