Unreal Engine 2

Unreal Engine

Developer(s)	Epic Games
Initial release	July 1, 1998; 18 years ago (1998-07-01)

Stable release	4.15 / February 15, 2017; 2 months ago (2017-02-15)
Repository	GitHub
Written in	C++
Operating system	Windows, OS X, Linux
Platform	Windows, OS X, Linux, HTML5, iOS, Android, Nintendo Switch, PlayStation 3, PlayStation 4, Wii U, Xbox 360, Xbox One
Available in	English, Korean, Chinese, Japanese, Portuguese (Beta version)
Type	Game engine
Website	www.unrealengine.com

Unreal Engine 1
Initial release	Unreal build 100 / May 1998; 18 years ago (1998-05)

Stable release	Unreal Tournament build 436 / November 2000; 16 years ago (2000-11)
Written in	C++ , UnrealScript, Assembly
Operating system	Windows, Linux, OS X
Platform	Windows, OS X, Linux, Dreamcast, PlayStation 2
License	Proprietary
Website	www.unrealengine.com

Unreal Engine 2
Initial release	Unreal Warfare build 633 / January 2001; 16 years ago (2001-01)

Stable release	Unreal Engine 2.5 build 3369 / November 2005; 11 years ago (2005-11)
Written in	C++ , UnrealScript
Operating system	Windows, OS X, Linux
Platform	Windows, OS X, Linux, iOS, Android, GameCube, PlayStation 2, Xbox
License	Proprietary
Website	www.unrealengine.com

Unreal Engine 3
Initial release	Unreal Engine 3 build 100 / March 2004; 13 years ago (2004-03)

Stable release	Unreal Engine 3 build 12791.2424394 / February 2015; 2 years ago (2015-02)
Written in	C++, C#, UnrealScript, GLSL,Cg,HLSL
Operating system	Windows, OS X, Linux
Platform	Windows, OS X, Linux, HTML5, Xbox One, Playstation 4 Adobe Flash Player,iOS,Android,Windows RT,PlayStation 3, PlayStation Vita, Wii U, Xbox 360
License	Proprietary
Website	www.unrealengine.com

Unreal Development Kit
Initial release	v5860.390428 / November 2009; 7 years ago (2009-11)

Stable release	v12791.2424394 / February 2015; 2 years ago (2015-02)
Written in	C++, C#, UnrealScript, GLSL,Cg,HLSL
Operating system	Windows
Platform	Windows, OS X, Linux, iOS, Android
Type	Level editor / Software development kit
License	Free for noncommercial use
Website	UDK website UDN for UDK

Unreal Engine 4
Initial release	Unreal Engine 4 build 8967 / May 2012; 4 years ago (2012-05)

Stable release	4.15 / February 15, 2017; 2 months ago (2017-02-15)
Written in	C++, C#, GLSL, Cg, HLSL; UnrealScript removed
Operating system	Windows, OS X, Linux
Platform	Windows, OS X, Linux, HTML5,iOS, Android,Nintendo Switch,PlayStation 4, Xbox One
License	Free to use, with access to source code; 5% of gross revenue after the first US$3,000 per product per quarter
Website	www.unrealengine.com

UnrealScript
Influenced by
Paradigm	Object-oriented, generic
Developer	Tim Sweeney
First appeared	1998; 19 years ago (1998)
Typing discipline	Static, strong, safe
OS	Cross-platform (multi-platform)
Filename extensions	.uc .uci .upkg
Website	udn.epicgames.com
C++, Java

The Unreal Engine is a game engine developed by Epic Games, first showcased 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 other RPGs. With its code written in C++, the Unreal Engine features a high degree of portability and is a tool used by many game developers today.

It has been awarded by Guinness World Records as "the most successful video game engine".

The current release is Unreal Engine 4, designed for Microsoft's DirectX 11 and 12 (for Microsoft Windows, Xbox One, Windows RT); GNM (for PlayStation 4); OpenGL (for macOS, Linux, iOS, Android, Ouya and Windows XP); Vulkan (for Android); Metal (for iOS); and JavaScript/WebGL (for HTML5 web browsers).

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Wikipedia