A RAD tool for creating royalty free 3d games. Powered by the Genesis 3D open-source graphics engine, Reality Factory is a wrapper that simplifies game creation for those people that don't know how to code in C+++. With advanced features such as bump mapping, normal mapping, boneanimation, and foliage, with more currently being implemented, such as physics and dynamic shadows. Includes level editors for wysiwyg placement of elements in a level. Very easy to use once the basics have been mastered.
RealityFactory is really the pinnacle of computer gaming. The aura of using a CRT monitor cannot be complete without this software suite. It's nostalgic for sure, but if you grasp it, it can really be powerful.
Reality Factory is a underrated software package, which aims to make gamecreation easier for artists by taking out alot of the things that require programming. It runs on a modified Genesis 3D engine, which uses the (dated) BSP format, popularized by the first Quake games, and Half Life 1. Nevertheless, Reality Factory still supports a couple of modern features such as bumpmapping and it also has a large (although quiet) community to help fellow gamedevelopers out.
As I've said, Reality Factory's package is highly underrated, since alot of people tend to look only at the rendering engine. RF's website also has a couple of great detailed tutorials to get you started as well, and if thats not enough there's always the forum to help you out! Give it a try!