Digital Gaming

Epic has released the Unreal Development Kit (UDK), a free version of Unreal Engine 3 for aspiring game developers. It's absolutely free for noncommercial and educational purposes. Those that wish to use Unreal Engine 3 for commercial use will need should refer to licensing terms at www.udk.com/licensing. The press announcement, demonstration video and features list can be seen after the jump. For more information, users can visit the official forums or the UDK documentation page.

UDK Documentation: http://udn.epicgames.com/Three/DevelopmentKitHome.html

Download UDK: http://www.udk.com/udkdownload.html

Source: http://news.bigdownload.com/2009/11/05/download-unreal-development-kit/

[UPDATE] Added a download link to Epic Games' host page for downloading the client.

Windows 7 Users: If the setup crashes for you, extract the installation using 7Zip to your desktop and move all the folders to "C:/UDK/UDK-2009-11."