My internal number line exists as a ribbon of squares laying flat (i.e roughly parallel to the ground plane, although they exist floating in an infinite black space). From zero, it goes right to left, then turns around at 10 and goes back behind that line from left to right and then loops around again at 20 in front of the first line. Also, at this point the &quot;camera&quot; turns around following the line, such that it is now viewed behind the first line, going left to right. From there it proceeds in a straight line, with a slight incline, and then plateaus at 100.