The Unreal Engine 4 logo presented during the pre-load of the game.

Unreal Engine 4 is the current release of the Unreal Engine developed by Epic Games. Unreal Engine 4 was the used by DONTNOD Entertainment to develop the game VAMPYR.



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.[1]

Unreal Engine 4

On August 17, 2005, Mark Rein, the vice-president of Epic Games, revealed that Unreal Engine 4 had been in development since 2003.[2] Until mid-2008, development was exclusively done by Tim Sweeney, CEO and founder of Epic Games.[3] The engine targets the eighth generation of consoles, PCs and Tegra K1-based[4] devices running Android announced in January 2014 at CES.

In February 2012, Mark Rein said "people are going to be shocked later this year when they see Unreal Engine 4".[5] Unreal Engine 4 was unveiled to limited attendees at the 2012 Game Developers Conference,[6] and video of the engine being demonstrated by technical artist Alan "Talisman" Willard was released to the public on June 7, 2012 via GameTrailers TV.[7][8] This demo was created on a PC with triple GeForce GTX 580 (tri SLI) and can be run on a PC with a GeForce GTX 680.[9]

One of the major features planned for UE4 was real-time global illumination using voxel cone tracing, eliminating pre-computed lighting.[10] However, this feature has been replaced with a similar but less computationally-expensive algorithm prior to release for all platforms including the PC because of performance concerns on next-generation consoles.[11] UE4 also includes new developer features to reduce iteration time, and allows updating of C++ code while the engine is running. The new "Blueprint" visual scripting system (a successor to UE3's "Kismet"[12]) allows for rapid development of game logic without using C++, and includes live debugging.[13][14] The result is reduced iteration time, and less of a divide between technical artists, designers, and programmers.[15]

On March 19, 2014, at the Game Developers Conference, Epic Games released Unreal Engine 4, and all of its tools, features and complete C++ source code, to the development community through a new subscription model. Anyone can sign up for UE4 for Windows, OS X, iOS and Android by paying $19 per month, plus 5% of gross revenue resulting from any commercial products built using UE4.[16][17] CEO and founder of Epic Games, Tim Sweeney, said that the new business model is a reflection of changes in the industry. Epic Games has traditionally made its Unreal Engine available to large AAA game development teams at a cost of millions of dollars but as the industry has evolved, Epic has had to "really rethink our whole business as to how we make the engine available to teams."[18][19] "Looking at the new shape of the industry now, we realize that's an outdated tool," Sweeney said. "Looking at the possibilities for the engine, we started from scratch and thought 'How can we make the engine available to more people?'".[20] According to the Unreal Engine website, subscribers to the engine will be able to cancel and renew their subscription at any time. They will be able to retain access to UE4 tools, but will not receive access to future releases of Unreal Engine 4.[21]

On September 3, 2014, Epic Games launched the Unreal Engine Marketplace, allowing UE4 subscribers to buy and sell community-created content of all shapes and sizes.[22] In addition to all of the previously released free content, the new marketplace came with a variety of asset packs including full-scale environments, props, characters, sounds, materials, animated meshes, prefab C++ code and a number of other asset types as well as free demos and tutorials.[23][24]

On September 4, 2014, Epic released Unreal Engine 4 to schools and universities for free, including personal copies for students enrolled in accredited video game development, computer science, art, architecture, simulation, and visualization programs.[25][26]

On February 19, 2015, Epic launched Unreal Dev Grants, a $5,000,000 development fund designed to provide financial grants to innovative projects being built with Unreal Engine 4.[27][28][29]

As of 2015, Unreal Engine 4 is available to everyone for free, and all future updates will be free,[30][31] with a selective royalty schedule.[32][33]

External Links


  1. The Imagination Engine: Why Next-Gen Videogames Will Rock Your World - Wired, Archive URL
  2. Rein: "We've been working on Unreal Engine 4 for two years"
  3. Tim Sweeney, Part 3: Unreal Engine 4.0 aims at next-gen console war
  4. NVIDIA Tegra K1 Preview & Architecture Analysis
  5. Epic Revealing Unreal Engine 4 Later This Year
  6. Unreal Engine 4 Behind Closed Doors at GDC
  7. Epic Games debuts Unreal Engine 4
  8. Epic's Unreal Engine 4 'Elemental' Demo Lights Up the Uncanny Valley
  9. The future of game development is in UE4.
  10. Epic Reveals Stunning Elemental Demo, & Tim Sweeney On Unreal Engine 4
  11. PS4: Epic Games’ Tim Sweeney Explains Lack Of Global Illumination In Unreal Engine 4
  12. Unreal Engine - Introduction to Blueprints
  13. Why Is Epic Games Promoting Unreal Engine 4 With A 'Flappy Bird' Clone?
  14. Epic's Tim Sweeney on How Unreal Engine 4 Will Change The Way Games Are Made, and Why You Care
  15. How Unreal Engine 4 Will Change The Next Games You Play
  16. GDC: Epic Games' Unreal Engine 4 adopts subscription model
  17. Epic opens up their Unreal development tools to everyone with a $19 subscription service
  18. Epic Games making Unreal Engine 4 available for $19 per month, starting today
  19. Why Epic abandoned its 'outdated' model and offered everyone access to Unreal Engine 4. GDC 2014: Epic Games founder Tim Sweeney says even Minecraft players should benefit from the firm’s game-making tech
  20. Watch Epic's just-released Unreal Engine 4 in action
  21. Unreal Engine FAQ
  22. Marketplace: Now Open For Business!
  23. Epic Games Opens Unreal Engine Marketplace to Developers
  24. Epic launches Unreal Engine Marketplace
  25. Putting Unreal Engine in the classroom
  26. Unreal Engine 4 is now free for educators
  27. Games offers up $5 million in Unreal Dev Grants
  28. Epic Games is giving away $5 million to Unreal Engine 4 developers
  29. Epic Games Wants To Give $5 Million In Grants To Unreal Engine Devs
  30. Unreal Engine 4 is Free for Everyone
  31. Engine 4 is now free-to-download for everyone
  32. If You Love Something Set It Free
  33. Why Epic Games is giving away its game technology

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