Impact

Impact is another Forge environment available in Halo 4. This map has the Forge pieces set to a UNSC pallet. The map takes place in space, on two asteriods which have been used by the UNSC at some point.

Description
This map was announced on a video by Gamespot regarding Halo 4's Forge mode.

As said previosuly, the map is set on two or more asteriods which have several UNSC structures built into them. The Background of the map features a nebula on one side and a crumbling planet on the other.

The space outside of the asteriod can be used to Forge, altough to a certain distance only. There is also an extremely subtle change in the gravity and movement of the player. Furthermore, this map also contains some Forge pieces such as the Station Core piece, the Corridor piece, the UNSC 2 Storey piece and the 4-Way Large Corridor piece, which are unique to this map only.

This map also features an object known as a 'Gravity Volume', which can alter the gravity inside it. It is possible to flip the object over, leading to opposite gravity.