User blog comment:Maniac Cop/Ideas for SAS:Zombie Assault 4/@comment-66.87.117.47-20130815151600/@comment-24629249-20140419055600

Bear in mind that the game could crash if the map is too big as it would stretch the game engines resources too thin causing a number of problems. Thats why Star Wars Battlefront 2 has the space battles on separate maps.