You mentioned a battlescape editor. I have been making a battlescape editor for the TFTD version over the last few weeks. I dont know if your doing yours using the graphics from the game or not, but I thoguht I would as a few ?'s I know that each battle map is composed of several smaller maps 10x10 cells. And I know that each small map has a set of mcd files it uses. For example for the farm maps in UFO, the ones starting with the 'culta' prefix, they use 2 sets of mcd's, cultivat and barn. I have a text file that holds the info on which map has which mcd sets, however is there a way to find this info in the .exe or something like that? I know people use custom terrain sets so I want my editor to be able to find customs sets. Another thing, in TFTD the battle map is composed of several map sections, lets say Im in a battle with my triton spacecraft, on the seabed terrain, fighiting a ufo. the mcd listing would look like this triton : sand,rocks,weeds,debris,ufobits : uext2,uext3,uint1,uint2,uint3 the only file in the save game folder that seems to change with different terrain is in GeoData.dat, byte 10. So I assume somewhere (maybe in the .exe) there is a list that tells which mcd's are loaded depending on this number. Sorry if im unclear on this post, thanks for any help.