I've been watching my daughter play World of Warcraft. I am extremely impressed by the low poly landscape that seems to go for miles in the game. There seems to be three or more textures on a surface at a time. They are using some kind of alpha blending to make the road texture blend with the grass on the sides. Sometimes dirt or rock patches will stick up from a hillside. I am familiar with texture programs like UVMapper that create one map for the entire surface. With it you would have a mile of texture for a mile of terrain. WoW textures are small compared to the terrains. They are tiling and the repeating texture is visible as you travel. It looks like these were just airbrushed onto the larger surface with UV Coordinates. What kind of program creates this tiling alpha texture and what is the technique called?