Overgrown is a wide, open map with plenty of vegetation and cover spots. The map has three distinct sections: a farm located on the northern half of the map containing a large barn and two fields that provide cover and concealment. A curved street lined with buildings on the southern half of the map, and running horizontally through the middle of the map is a river bed with two bridges on the east and western sides of the map crossing over it. This map is particularly favored by snipers because of the map's size, and also CQC in the many small buildings. It also has plenty of vegetation, allowing snipers to blend in with the background. Just north of the riverbed in the middle of the map is a two-story farm house, with a mounted M249 SAW in Call of Duty 4: Modern Warfare and Call of Duty: Modern Warfare Remastered and a Minigun in Call of Duty: Modern Warfare 2, that is accessible from all the sections of the map.
Upon the south-western edge of the eastern bridge is another two-storey farmhouse with another mounted M249 SAW/Minigun available for use.
In one of the inaccessible buildings on the south side of the map, the words "ALEXANDER ROYCEWICZ 2007" are hidden on a wall. To see it, one must turn brightness settings as high as possible and enter the building as a spectator.
In the Wii version of the game, the map has a lot less foliage than it does in the 360/PS3/PC versions due to the Wii's graphical limitations.
On one of the trucks near the B Flag in Domination, the word R3TARD0 can be seen on the license plate.
The broken wall on the left side of the barn can be shot through with no penetration penalty to the weapon's damage.