This document discusses traditional retail stores and digital stores for video games. It covers the traditional retail model of publishers, distributors, and retailers. It then discusses different types of retailers like GameStop and Best Buy. The document outlines challenges for small publishers breaking into traditional retail and highlights strategies retailers use like trade-ins and downloadable content. It also covers trade shows like E3 and discusses how digital stores and services like Steam work. Finally, it provides optimization tips for app stores on mobile platforms.