Ocean Ark: 100 Below is a single-player indie simulation game focused on survival, base building, and underwater exploration on the open sea. Players construct and expand a floating steel platform into a livable home while managing resources, crafting tools, and venturing below the surface for new materials and technology.
Gameplay
The core loop centers on maintaining life above the waves through scavenging and crafting. Players use a hook to pull in drifting crates, barrels, and scrap from the water, then time spear throws to catch fish for food. A workbench requires repairs before new tools and facilities become available, while a stove allows cooking meals and a purifier provides clean water. Hunger and thirst increase over time, requiring players to stock supplies before extended outings.
Building expands the platform floor by floor using gathered materials. Walls and railings are placed manually, followed by furnishings such as beds, bookshelves, plants, and braziers on floors, walls, and pillars. Greater coziness in the home slows the rate at which hunger and thirst develop.
Underwater sections involve suiting up and descending a ladder into a sealed tower beneath the platform. Each level features round hatches that conceal chests and blueprints. Oxygen must be monitored carefully to return to the surface before it runs out. Successful blueprint recovery enables construction of the first submarine for further sea travel. Daily cycles include changing weather from sunshine to storms, with lamps providing light at night, and occasional merchant visits for trading.
Game Modes
The experience is built around a single-player survival and construction loop without separate named modes. Progress unfolds through resource gathering, platform expansion, and underwater dives that unlock new capabilities like the submarine. The demo limits building to four floors and exploration to three underwater chambers labeled B-1 through B-3, with the submarine available for a trial run. Additional floors and deeper chambers remain locked for the full release.
Building and Progression
Platform growth starts from a basic single deck and scales with available resources. Each new floor adds space for personal customization through manual placement of structural elements and decorative items. Comfort levels directly influence survival needs, creating a steady incentive to improve living conditions. Underwater progression ties into this by yielding blueprints that expand options above and below the surface, including the submarine for extended trips.
Weather and time-of-day systems add variety to daily routines, while merchant encounters provide occasional trade opportunities using collected coins. These elements combine to support a steady rhythm of salvage, maintenance, and exploration without external competition or multiplayer elements.
Is It Worth Playing?
The game targets players who enjoy deliberate single-player survival simulations with building and light exploration. The demo offers a playable introduction in Simplified Chinese, allowing testing of core systems up to a limited scale before the full version arrives. Planned content includes deeper underwater chambers, further submarine upgrades, taller platforms, and additional facilities and furniture. With no user reviews available yet and a planned release date in early 2027, interest depends on preference for cozy, self-paced ocean-based crafting and diving mechanics. Those drawn to managing hunger, thirst, and home comfort alongside underwater blueprint hunting will find the verified systems align closely with that style.