Would there be any benifit for constraining the world into tiles for a isometric 3d engine? If we take the most powerful concept of isometric engines, building enviroment with modular reusable components, into 3d, we would build 3d objects which can be recombined into a variety of enviroments with little effort. This concept can be taken further in that each module then can be composited into further unique modules. It seems to me that this is a powerful concept yet to be exploited by the commerical 3d games out there. They seem to concentrate on building vast unique 3d worlds requireing many artists and level designers(as witness the FPS games). Is anyone considering making their 3d isometric engine this way? Also what do people think of using RM for making an isometric engine?