Epic Games' head Tim Sweeney explains in simple terms what Vulkan API is and why the Samsung Galaxy S7 is a gaming trailblazer. This week we've seen some amazing looking graphics coming from Epic Games and Samsung. With the Samsung Galaxy S7, both groups suggest we're entering a new age for gaming on smart mobile devices. It involves Vulkan API, Unreal Engine 4, your CPU, your GPU, and a demo called ProtoStar. But what's that mean to you, the everyday average user?