Unreal Engine (UE4) is a complete suite of creation tools for game development, architectural and automotive visualization, linear film and television content creation, broadcast and live event production, training and simulation, and other real-time applications.
Unreal Engine is a complete suite of development tools for anyone working with real-time technology. From design visualizations and cinematic experiences to high-quality games across PC, console, mobile, VR, and AR, Unreal Engine gives you everything you need to start, ship, grow, and stand out from the crowd.
The current release of this game is Unreal Engine 4 which is designed for Microsoft Windows, macOS, Linux, SteamOS, HTML5, iOS, Android, Nintendo Switch, PlayStation 4, Xbox One, Magic Leap One, and virtual reality (SteamVR/HTC Vive, Oculus Rift, PlayStation VR, Google Daydream, OSVR, and Samsung Gear VR.
Leader in Graphics
Unreal Engine has better characteristics for the different types of graphics. It is better than other games actually. Thus this engine is known for the creation of a high-tech Triple-A game in which the primary role played by the achievement of the best class.
Fully open-source. The community is constantly helping Epic to improve the engine. You can see the list of non-epic contributors at every major release. On top of that, you can dig into the source to find how certain functions work at a lower level. If you build with C++, you can build from source, or not. If you build with blueprint, you can find how certain functions work at a lower level.
Amazing Art Pipeline
It has an excellent art pipeline. Node-based shader authoring has always been a huge pro for unreal for a long time.
For a wide variety of situations, Unreal Engine has more tools and functionality, which is not present in other games with a similar type. The Unreal Engine has visual editors than other games.
Good Knowledge of C++ is a Plus
Making changes in the game is quite easy, you just need to have knowledge about C++.
Great Render Engine
Due to different functions rendering technology is more efficient and faster than other games. This game engine actually runs quite fast.
There are schemes like the blocks in the unreal engine so that even the artists without negligible knowledge will be able to use the engine in the ground of programming. Also, this function is appropriate for prototyping. But the main work will still have to use C ++ for the same.
Support for Visual Programming
Blueprint (Visual Programming) is a powerful engine-wide tool that could be easily extended if you have additional manpower in C++.
Unreal engine in general is built upon the proven structure of many AAA games. It is a highly evolved engine for more than a decade. It’s a very subjective pro here, in short, you can trust it to manage a large/complex game. Understand that Epic is a multi-decade old company that not only builds an engine but also uses its own engine to build a game. To say that the engine follows a proven structure is really an understatement.