Once Human is sending players out to sea with Isles of Abyss, a free expansion built around five ocean regions, floating bases and an ocean that is very much not minding its own business. The PlayStation announcement lists an October 22 release on PS5. The game’s own update notice adds an important wrinkle: service availability follows scheduled maintenance, so this is one launch where checking the server notice beats staring angrily at the download button.
The big change is not simply a water map. Isles of Abyss makes the sea part of the threat, the progression loop and the player’s base-building problem. That gives the expansion a clearer identity than “the regular survival game, but everyone brought swimwear.”
The ocean is the monster, not just the road
The expansion describes its ocean as a conscious entity called the Sunken Lord. Lighthouses called Towers and spectral Voyagers act as manifestations of it, while regional hazards include fog, black tides and temporal fire. Players explore the five regions, fight bosses tied to enormous towers and eventually confront the Sunken Lord.
That framing matters because open water can easily become dead travel time. Here, the developers are presenting the route itself as hostile territory. A trip between islands is supposed to carry weather, anomalies and combat pressure rather than becoming a long blue loading screen with better reflections.
Your raft grows into a mobile sea fortress
Players begin on a starter island with a basic raft, then build, customize and upgrade a mobile sea fortress. The developers describe these vessels as transportation, forward bases, workshops and artillery platforms. Designs can range from wooden ships with broadside cannons to industrial platforms and science-fiction carriers.
The useful design idea is that the base can move with the expedition. In a land-based survival game, the main question is often how far you can travel before returning home. A floating workshop changes that calculation, provided the ship’s layout and defenses can survive what is waiting beyond the next patch of fog.
Land and sea feed the same progression loop
Resources found on islands support naval technology and heavy weapons. Materials recovered at sea and underwater feed back into land equipment and base progression. The official description also includes diving through sunken ruins, gathering aquatic resources and hunting underwater.
The version 3.1.1 notice describes the scenario as PvE, with a core cycle of roughly 21 days divided into two phases before a rest stage. It also says the scenario runs across PC, console and mobile. That is more specific than the PS5-focused announcement, but availability still depends on the relevant regional server opening after maintenance.
PS5 gets DualSense-specific support
On PS5, the developer says haptic feedback will represent waves, storms, hull impacts and the Sunken Lord’s pulse. Adaptive triggers are used for naval cannons and grappling lines, while the SSD is intended to reduce interruption when moving between land, sea and underwater areas. Those are announced platform features, not a Zypher performance test.
Check the live server notice before setting sail
PlayStation’s post says the expansion arrives on PS5 on October 22. Once Human’s version 3.1.1 notice schedules maintenance for October 21 at 4:00 PM Pacific, estimates about three hours and warns that the actual opening time can differ. It says Isles of Abyss servers become available after the update.
In practical terms, download the current base game, confirm the update has completed and check the in-game server list before organizing a squad around a precise minute. The expansion is free-to-play content, but free does not mean the servers can be negotiated into opening early by repeatedly refreshing them.
More survival games at Zypher
Once Human itself is a free-to-play download, not a physical game we are pretending to have on a shelf. For other survival adventures, Zypher currently has listings for Subnautica on PS4, ARK: Survival Evolved on PS4 and No Man’s Sky on PS4. Check each product page for the exact condition option currently available.
