The 3DCakeWalk Game Development Kit has just hit v1.0. 3DCakeWalk was designed for anyone interested in creating their own games. The game development kit comes with an editor, real time 3d engine, documentation, tutorials, and more. For more information. You can go to the website http://www.3dcakewalk.com/.
For more information about the editions, it can be found here: http://www.3dcakewalk.com/main/index.php?topic=277.0