Archive notice: This article was originally published on April 16, 2015. Links and embedded videos are preserved as part of the historical record.
The Houdini Engine plug-in has already been available for the Unreal Engine, 3ds Max and Maya for some time. Now Unreal Engine users can also enjoy it. The plug-iin is compatible with Unreal version 4.7. The full version 4 is currently even available free of charge.
Here you will find the download and installation instructions.
Here is the SideFX GDC Reel, in which you can see a fair amount of game art created with Houdini:

