its not,i have seen extremely large maps in source one was a map based on fallout 3 it literately was pretty much all of fallout 3 excluding dlc areas or areas off or not truly connected to the open outside world granted i don't know how its done but i have seen large maps. map was for gmod i think 9 or 10.
by not connected to outside world i mean areas that are more then just a door away like the place in which you have to travel by boat it was one of the dlcs i cant remember if there were area like that other then dlcs but anyway you should get the idea.
spiderbug2
Brian joined
I think the half-life games are fun and some of the hl mods.My most favorite hl mod is Half-Life the Zombie Edition. Dawn of War games are fun to.