The Megacorporation Global Alliance Makeshift Base was a makeshift military base established around the Central Vault's surface hatch on Paradise Island. The base served as the barracks for the Megacorporation Global Alliance's fragmented military units after they were forced to retreat to Paradise Island during the Twilight Collective Uprising. The base later served as the battleground for the decisive battle against the Twilight Collective, and was ultimately destroyed after the Central Vault was opened and absorbed its surrounding area.