For several years now we have been working with AMD on exciting game titles like Deus Ex, Hitman, Tomb Raider, and we are currently working on the latest version of Thief, to bring the best possible experience to AMD hardware. In this presentation we will discuss some great AMD technologies that we are using in Thief. Most importantly, we will talk about Mantle and why it is something we have been waiting for for a long time. We are currently implementing Mantle inside of Unreal Engine 3 and will share some of our experiences. We will also cover additional AMD technologies we are supporting in Thief, like AMD TrueAudio, 4K Gaming, as well how are exploiting the power of the compute hardware in the GCN architecture. While we will primarily talk about our high-level view on these technologies and why we are excited about them, we will also share some helpful implementation tips from our programmers.