I downloaded the Amazon app in this link http://www.amazon.com/Amazon-com-Amazon-for-Tablets/dp/B00AQL8VU4/ref=sr_1_1?s=mobile-apps&ie=UTF8&qid=1438397452&sr=1-1&keywords=amazon+app+store

The games I downloaded work on my Samsung S4. They're found under Library -> Your Apps. But I cannot find the library section on my Nexus 7 Amazon app.