The Realm Crafter Mega Terrains is an advanced terrain editor designed for those who are interested in creating massive, detailed terrains. Designed with speed in mind, it still has a tremendous task, that is creating very detailed terrains that are anywahere from two to five miles square, and yet have detail so sharp that footpath and road textures can be high resolution. This application is not for the faint of heart! A lightmapping session of a massive terrain may take upwards of an hour to complete.