Forge mode is coming back in Halo 4 , and it's in development at Certain Affinity, the creative house responsible for Halo: Combat Evolved Anniversary and Halo: Reach map packs.

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Certain Affinity based its improvements to Forge on fan feedback, allowing for more creative freedom and ease of use. Players can link duplicated objects using magnets, for instance. In the demonstration below, designers create a headquarters with a bridge, and it's built much faster than it would have been in Halo 3's or Halo Reach's Forge.What's more, users can lock objects in place, which prevents them from accidentally deleting or ruining their designs, as was a past problem.The most interesting addition, however, is the Trait Zone. These custom fields allow you to change the physical properties of Spartans in specific spots. In the demo above, you can see a Spartan's speed and jump height boosted, as well as other options including damage absorption, shield multiplier, and recharge rate.Or you could just lower the gravity of the map altogether.Source: The Verge

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