High Quality Content by WIKIPEDIA articles! The Unreal Engine is a game engine developed by Epic Games, first illustrated in the 1998 first-person shooter game Unreal. Although primarily developed for first-person shooters, it has been successfully used in a variety of other genres, including stealth, MMORPGs and RPGs. With its core written in C++, the Unreal Engine features a high degree of portability and is a tool used by many game developers today.