The Pangaea map script with toriodal world wrap will generate a few (~2%) Pangaea with less than half the land as normal, usually including a nearby island where no AI will start. It only does this with a solid shoreline selected. Also, 10% of the maps generated will be about 65% of normal land size. There is a bell curve/geometric like distribution of slightly larger pangaea at discreet sizes (roughly increasingly more maps at 45%, 65%, 80%, 90%, 95%, 100% of normal size or a similar progression of sizes. The chance of such maps is about 2%, 8%, 12%, 18%, 27%, 33% respectively or something similar. This variation in continent size has a direct correlation to the save game file size as well (a smaller continent will have a smaller save file size).