You set the playable area(the orange box) with 'Horz(x)size' and 'Vert(y)size', you set it to 100x100 so that is quite tiny, try 400x400 with bordersize 50 and check again.
The bordersize is a non playable area, you can use it for intro's or spawning troops, you can unshroud the border with a script
Originally Posted by: acidbrain