Hi!
This does not have a random level generator in it. What this does is convert layer tilemaps into 3D mazes, and use 3D billboard sprites for the items and enemies you place as instances in the room editor.
However, if you can code logical randomized tilemaps yourself, the conversion to 3D would apply as well.
A room is constructed mostly through 4 layers: Floor, Walls, Ceiling and "Wall pieces above doors". When you draw these layers in the room editor, these will be converted into the 3D maze. If you can figure out a way to consistently have these multiple 2D layers work together into creating a logical random maze, then that could theoretically work. Keep in mind that doors and key placement will probably be a bit tricky to setup.
Randomized levels is not in the scope of this template however since I am not too familiar with random level generation.