Once Human: Isles of Abyss — From a Misplaced Lighthouse to a Living Ocean

Once Human's largest free expansion, Isles of Abyss, is now available on Xbox Series X|S, adding five marine sectors and a living ocean known as The Sunken Lord. Inspired by H.P. Lovecraft's "The Shadow Over Innsmouth," the team inverted safe symbols like lighthouses and ships into sources of horror, alongside modular naval crafting and a land-sea-deep gameplay loop. Game Pass Ultimate members can claim the launch bundle until November 18, 2026.