Unreal Engine is a powerful game development engine by Epic Games, known for its advanced graphics, real-time rendering, and versatility in creating a variety of high-quality games and interactive experiences. Key features include cutting-edge graphics capabilities, a visual scripting system (Blueprints), physics integration, robust audio support, and tools for VR/AR development, level design, and enterprise visualization. Epic Games aims to promote its software globally to expand access to game development, with Unreal Engine being compatible across multiple platforms.