Grifball is an e-sport in Halo 4 where players have to carry a ball - in the form of a bomb - and score by detonating said bomb. Forge, the map editing mode introduced in Halo 3, spawned the sport. Its creators interviewed developers at 343 Industries about Forge.

Two new Forge tools are available in Halo 4. Magnets snap objects together automatically, avoiding the time-consuming task of lining up the objects with a controller that is not as precise as a mouse. Duplicate objects offer players a copy and paste option, so players can simply press a button rather than navigating through menus.

343 also described 3 trait zones -- designated areas where effects are granted to players.

"Zones can be created to modify damage resistance, shield multiplier, recharge rate, etc." according to 343 Industries. Movement and jump height can be "greately altered" and zones can be created to change player visibility. "We're excited about the Player Trait Zones. We have been playing with these for a while and have come up with some really cool levels. But we know that we have only scratched the surface and can't wait to see what all of you can do with them!" 343 added.

A couple of changes should help to ease new Forge users into the mode, 343 thinks. Targeting enhancements show the name of an object when highlighted, and highlights "based on its [the objects] state". A D-Pad menu appears when in monitor form -- the mode use to create -- and is context-based. It changes "based on what the player is targeting," though 343 did not elaborate.

To avoid the problem of having a single Forge environment dominate community maps, 343 includes 3 different environments. One is the Forerunner-themed environment, returning from Halo: Reach, while the remaining two are unconfirmed.

Halo 4 releases November 6 on Xbox 360.