[Skunkmeister]

Larger could be possible, but really the limitation is the size of map_c while you are working on it.

Right now its 16512x12032 pixels, and even though it is just an 8bit grayscale image, its a real resource hog when you are working on it in photoshop/gimp.

So the limitation isnt the game, its really how big you can get a workable image so that you and your system are confortable to work with it.