It takes a cunning balance of sea and air to control the mass that remains on these ancient platforms. Companies erected massive rigs that now sit on the surface of the water. Rigs (4 player map) Many years ago, people harvested organic fuel from pockets beneath the seas of Pegasus II.Decommissioned after the Seraphim invasion, it served as a staging area for Cybran forces during the Infinite War. Way Station Zeta (4 player map) This installation sits high above the surface of Gradius IV.