This document discusses the advantages of using the Unreal Engine 4 (UE4) for game development compared to other game engines like Unity. It notes that UE4 is a complete toolset that supports multi-platform development including PC, console, web, VR/AR and mobile. It has visual scripting using Blueprints that allows artists and designers to code without programming. UE4 also has C++ integration and provides full source code access for free along with flexible licensing options.