Sceelix is a 3D Procedural engine
Create 3D Scenes -urban environments, green spaces, interiors…- and other elements with its unique visual node-based language and integrate your creations directly into your game engine.
Results can be generated at design-time or runtime-time through the API. With this API you can also develop your own nodes.
Trials are available at www.sceelix.com for anyone interested in having a go.
Sceelix
Speaking of tools, Francisco RA sent me this information about a 3D procedural engine. I’ve played around with it a little; the node-based interface is fairly easy to pick up, though I’d like to be able to orbit the camera more easily.