Forge/Halo 4

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The initial reveal of Forge mode at RTX 2012 showing a redesigned Blood Gulch base in a UNSC-themed aesthetic style.

Forge is a multiplayer mode featured in Halo 4. Unlike Halo: Reach, which featured a total overhaul of how Forge functioned compared to its Halo 3 incarnation, Forge in Halo 4 was based on the Reach version and did not feature so many drastic changes. Despite this, Halo 4 expanded on map creation features significantly. The mode was first shown off at RTX 2012.[1]

Changes from Forge in Halo: Reach[edit]

A map created on the Forge Island map showcasing the new UNSC-themed architecture.


  • Inclusion of Halo 4 weaponry and vehicles including Promethean weapons, the Mantis and Halo 4 Armor abilities.
  • Although most objects are the same/ similar geometry as the structures featured in Halo: Reach, the previously-Forerunner-themed objects have now been reskinned to resemble Human architecture, with white and grey paint.
  • While still based on those featured in Reach, some object dimensions have been altered slightly. For example, bridges are no wider than their Reach incarnations.
  • Map-specific objects and textures. Each Forge canvas features its own selection of unique map-themed objects (See Forge objects).
  • Interactive objects such as deployable turrets, terminals and barricades to support the new Dominion gametype.
  • Placeable Trait Zones that allow players to have their traits changed in select areas of the map.
  • Changing an object's color now changes the color of the paint on the object as opposed to lights.

Object manipulation[edit]

  • Inclusion of object duplication.
  • Inclusion of a magnet system to allow players to easily snap objects to one another with little effort.
  • The addition of baked lighting systems - when players exit editor mode into player mode, the lighting now bakes shadows onto the map.
  • The object which players have selected is now highlighted green to prevent players from deleting objects by accident.


  • Weapons can no longer be placed down on Infection maps, due to the mode's replacement by Flood. To offset this, weapons can only be spawned via Ordnance pods.
  • Due to a glitch, the fine edit and zoom camera functionality from Reach was missing in the base Halo 4 game, making fine object placement more difficult. This glitch was corrected in the version of Halo 4 included in Halo: The Master Chief Collection.
  • Object hitboxes and object textures are misaligned on some objects, making players appear as though they are floating above the floor or unable to shoot through holes in the wall.
  • Magnets on objects were hand-placed and as such, were slightly misaligned if multiple objects were placed next to each other via magnet, requiring hand-placement of many objects.


Halo 4 released with three Forge canvases, a first in the series history.

  • Erosion - an underground cave area with a UNSC interior facility attached.
  • Impact - a UNSC facility set on an asteroid, allowing for forging in a space environment.
  • Ravine - a Forerunner installation on Requiem similar in theme to past Halo levels such as Forge World.

Following user feedback that the available Forge spaces were too restrictive for map-making, 343 Industries released the free Forge Island DLC for all players in March 2013, featuring a massive skybox and flat land for Forging in an environment very similar to that of Forge World in Reach.

Changes for Halo: The Master Chief Collection[edit]

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Implemented objects[edit]


Drivable vehicles[edit]


Vehicles and wrecks[edit]



  1. ^ Youtube, RTX 2012 Forge reveal (Retrieved on Jun 1, 2020) [archive]