In developing games, they use game engines. One such engine is Unity. It is preferred by coders, and small developer teams. However, the preferred choice to make AAA games marketed by big companies, the engine used is Unreal Engine. This has been developed by Epic nearly a quarter of a century ago, It has its C++ core APIs. Artists prefer Unreal. Graphic fidelity on Unreal’s most basic resources contributes to graphical wonders in video games. It is known for its sheer number of tools. A game developer chooses his own area of interest while using Unreal. There are tools for designers, animators, programmers, artists and others. It gets you going. All AAA studios use Unreal. It is a field for experts. Each module requires a drilling for several months. Right now Unreal Engine 5 is in the development. Early access is available. Its Lumen is AI-based lighting system. It makes reflections visible in mirror or pond in real time