ID:645583
 
Sometimes mobs on my game can get hit off screen and into void (off the map). How do you define the void?
area/void
Enter()
return 0

world.area = /area/void

that what you're looking for?
An atom cannot exist in the area outside of the map. More likely what you're seeing is that the world/maxx and maxy are being expanded to accommodate the largest map in your game, leaving empty space on the North and East sides of your smaller maps.

The solution is generally to place a dense and opaque turf along the edges of the maps. You can also set the default turf (world/turf) to this dense/opaque type to have the extra space filled in automatically with it.