Using genie editor, how do you make a new terrain? I want to basically make red grass. Is this possible?
Terrain texture files (DDS format) are located in “steamapps\common\AoE2DE\resources_common\terrain\textures\2x” folder. You can replace them in a mod.
For example to make “Grass 1” and “Grass (other)” terrain more reddish, you can open “g_grs.dds” file in some image editor to make it more reddish and then export it with same name into a mod.
When saving terrain DDS files use “BC1 / DXT1” compression and generate mipmaps, because this is how original game terrain DDS files have been done.