Forge Island

Forge Island is a Halo 4 multiplayer map intended for use as a Forge canvas. The map was released as free downloadable content for Halo 4 originally scheduled for release on April 11, 2013.

Forge Island passed certification earlier than expected and was made available for download for free on March 29, 2013. Forge Island consists of three flat islands, nicknamed the "Great Anvils".

Universe and lore
Forge Island is set in a peninsula to the southwest of Requiem's smallest continent, referred to by science teams as the "Great Anvils". The geological data gathered from this area is used by Infinity Science's Forge group to help set up custom War Games scenarios, gaining the designation War Games Map_Set/: 230-1.

Layout
This is the first Forge canvas on Halo 4 that allows players to go and Forge on sea-level, and also provides the largest space available; If the width of the largest island was '1', you could go away from the middle of the map by about 6-10 units.

Forge Island includes three flat islands with green grass along with pale brown patches of dirt. Apart from the very edges of the islands, the entire top is flat. It also featured all new pieces, being the first Halo map to feature a green screen piece, flat, natural stone walls and place-able trees. Also, several pieces that on other maps belonged to other object groups were moved to 'Buildings' — these pieces were more cumbersome for rendering and dynamic lighting and as such, in "Buildings", less of them could be placed.

Glitches

 * By placing a two-way teleporter inside the islands, you can enter a 'cave' inside the island, which is also a fully forgeable (albeit probably not intended) area. The rocky spikes protruding upwards from the sea (Visible better when in the 'cave') are also fully hollow.

Miscellaneous

 * The map features a green screen in its new unique palette, obviously intended for machinima purposes.
 * The Forge Island-exclusive Forge items are the same as the ones in Ravine.
 * Many objects that had once been in separate pallets, such as the "Walkway Large" or the "Window Coliseum" have now been moved to the "Buildings" pallet. This is due to how these objects are just as laborious to performance as the other "Building" pieces. As a result of this, the object limit for the "Buildings" pallet has increased from 12 to 20.
 * Forge Island seems to have less framerate issues on split screen than its other counterparts, although this is likely due to the map being mostly flat terrain.