Left 4 Dead 2 Authoring Tools are available!
With Left 4 Dead 2 Authoring Tools you're able to create own content for Left 4 Dead 2. Also you'll need to download the Left 4 Dead 2 Add-on Support Package to be able to use new content in game. All the packages are available on Steam.
More information on official Left 4 Dead 2 Blog.
Unreal Development Kit Released
Free version of Epic's Unreal Development Kit is now available from nVidia Developer Zone. The UDK pack contains all the tools that you'll need to create own product.
More information and videos on nVidia Developer Zone - Unreal Development Kit page and official official UDK page.
Dragon Age: Origins Toolset
More features from upcoming Dragon Age: Origins Toolset:
The Dragon Age™ Toolset puts the power of the game developer in the palm of your hands. The Dragon Age Toolset will allow you to produce your own content including dungeons crawls , full-length campaigns, and even cut-scenes you can share with friends and the BioWare community. Key Features Include:
Create New Adventures – Forge your own environments from your imagination, or use the rich set of Dragon Age locations and artwork as starting blocks to build new, original campaigns, quests, or cut-scenes.
Stage Massive Battles – Test your might in battle by fully customizing the combat and creature AI, allowing you to create detailed action sequences full of heart-pounding warfare.
Be the Director - Create your own stories with the powerful cinematics editor that offers full control of the camera, voice and lip syncing tools, and a full character creator.
Content Creator's Community – Join the BioWare Social Network where you can easily find tutorials, share content, chat with other creators, and get content updates for the toolset.
You can also check Toolset Trailer.