Nucleus (King of the Hill)

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Nucleus (King of the Hill)
Basic Information
Map type: King of the Hill
File name: koth_nucleus
Released: August 13, 2009 Patch
(Classless Update)
Variants: Arena, Versus Saxton Hale and Galleria
Developer(s): Valve
Map Info
Environment: Spytech
Setting: Indoor
Hazards: Pitfall
Bot support: Yes
Map Items
Healthico.png Health Kits: Smallhealth.png ×2  •  Mediumhealth.png ×2
Ammoico.png Ammo Boxes: Smallammo.png ×2   •   Mediumammo.png ×5
Map Photos
Loading screen photos.
Map Overview
Nucleus (Arena) overview.png
Down under? More like, six feet down under.
The Engineer

Nucleus is an alternate version of the Arena variant, modified for the King of the Hill game mode. Along with Viaduct and Sawmill, Nucleus was released with the Classless Update as the first official King of the Hill maps for Team Fortress 2.


Note: If you are having trouble with finding the locations listed here, see the Helpful overview section to see their exact position marked on the map.

  • The Device: The swirling, colorful Doomsday Device which dominates the center of the map. It contains the map's Control point, which unlocks after several seconds.
  • The Pit: Directly below the Device is a bottomless radioactive pit with a narrow catwalk suspended just above it. The catwalk holds a Medium Health Pickup, but the pit is an unavoidable death for anyone unfortunate enough to fall in.
  • The Perimeter: The series of ledges and catwalks which directly surround the Pit. The Perimeter is further divided into "RED-Side Perimeter" and "BLU-Side Perimeter", based on which spawn room is on that side of the map. Narrow bridges to the control point appear across the pit after the control point is opened.
  • Roofs: On top of the buildings along the Perimeter are roofs which are accessible by Rocket Jumping or Sticky Jumping. The B roof area can also be accessed by Crouch Jumping onto the sides of the control point that face the B roof area, and then jumping onto the roof. These are useful spots as they give great height advantage and a view of the entire area.
  • The Bridges: Once the timer has ticked the control point will open and bridges will extend out so that it is reachable. There are three bridges, one on each side in front of each team's spawn, and one far bridge in the center between the spawns.
  • Flank Building: The flank building is one of the buildings on the Perimeter. It is mostly blue colored and has no bridge connecting to the point from it, but has a bridge connecting to the catwalks below the point.
  • Access Building: Directly across from the Flank Building is the Access Building. It is entered from each team's side by a set of staircases, and in its center are two sets of staircases which lead down to the central bridge of the point. On each side there are entrances to balconies which overlook most of the area.
See also: Category:Nucleus images

Helpful overview

Nucleus's locations
3.Bridges (Not shown here as they have not yet appeared)
4.Flank Buildings
5.Access Buildings


Main article: Community Nucleus (King of the Hill) strategy

Control Point timing

Control Point Multiplier Seconds
Control Point ×1
24 .000
16 .000
13 .091
11 .520

Update history

August 13, 2009 Patch (Classless Update)

  • Added Nucleus (King of the Hill) to the game.

May 27, 2010 Patch

  • Changed side spawn exits to prevent sniping from inside the spawn door.
  • Fixed graphical glitch on platform floor.
  • Fixed blue-colored models in RED area.



  • It is possible to reach the two lights above the Access Building, but only through rocket jumping and sticky jumping.


  • The particles seen around Nucleus's centerpiece are re-used from the ending sequence from Portal.

See also

External links