Vortex

Vortex is a Halo 4 multiplayer map. The map is also featured on three missions of Spartan Ops, in which it is known as "Cyclone".

Universe and lore
The Forerunner structures which occupy Requiem's equatorial caverns appear to generate power by harnessing its violent squalls. Onsite personnel believe that a full understanding of such a technology would offer the UEG substantial amounts of affordable, clean energy. Nevertheless, its internal mechanisms remain enigmatic.

Callouts
The following are locations on the map that were named in the Halo 4: Official Game Guide:
 * Red Base
 * Dunes
 * Red Turret
 * Horsemen
 * Red Lift
 * Red Trampoline
 * Far Gate
 * Wind Tunnel
 * Wind Trampoline
 * Pillars
 * Generator Cave
 * Limbo
 * Near Gate
 * Blue Landing
 * Blue Lift
 * Blue Trampoline
 * Blue Sneaky
 * Blue Base