Impact

Impact, also known as War Games Map_Set/: 449-2 is a Halo 4 multiplayer map intended for use as a space themed Forge canvas. It is one of three such maps to be designed and adapted to Forging.

Description
This observation outpost was established to examine the site of a spectacularly violent meteor collision recorded by an ONI patrol drone in 2547. When researchers first arrived, they were startled to find a non-native fragment of the impacting agent had actually survived and was of unknown origin. More recently, interest in the site has grown as the fragment has proven to have originated from long before the earliest of known Forerunner artifacts.

Impact is situated on a large, gray asteroid floating about in space. Smaller chunks are located around it and a singular, empty UNSC structure sits on the main rock. It is mostly featureless, but this accommodates forging with structures that have a unique palette to the level.

Trivia

 * Although the map is set on small asteroids exposed to the vacuum of space, there is sound and Earth-like gravity. This may be present because it is intended for the player to forge indoor space station style maps with their own artificial gravity and atmosphere.
 * The map's description hints that the object being excavated could be Precursor in origin.