OregonRider wrote:No but i have tried to get my game to load terrian in from DEM but it wont work how did you do it
There are several threads about how to do this with pictures and directions here in the forum. There is an excellent tutorial by bnsfsubdivision. That is what I first used. Getting basic 1 arc second terrain in the game using this tutorial shouldn't take you any longer than an hour for a very large area.
If you aren't modelling a real location, and still want to avoid SRTM/DEM terrain then you would be making your terrain using the tools in the editor, starting from a 'flat world'. This might seem easier at first, but is a complete pain in the butt to create grades and scenery on anything but very flat, and small route.