Outer Wilds Wiki

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Outer Wilds Wiki

Giant's Deep is an ocean planet made of increasingly dense fluid layers, with five small islands on the surface. Filled with turbulent weather and a dense atmosphere, massive cyclones frequently form and travel along the surface of the water. The planet has a coral core surrounded by very dense fluid.



The planet is the largest and heaviest in the solar system and features a thick, effectively opaque, gaseous green outer layer. Though it obscures the planet's surface from space and vice versa, the atmosphere can be flown through with ease. Occasionally small, floating islands that drift on the surface waters will briefly pass up through the atmosphere into space, before falling back to the surface.

The Orbital Probe Cannon orbits the planet's equator and fires in a random direction at the beginning of every loop, shattering into pieces as it does so. The ruins of the Cannon continue to orbit the planet for the duration of the loop.


The planet itself has an oceanic surface with a gravity of 2.0x, five unique islands, and at most 11 cyclones circling the global waters. Most of the cyclones hurl anything in their path into space, including entire islands.

Most of the islands are not fixed features of the land (there being no land to speak of) but are free-floating masses that drift around the planet on their latitudes. Four of the five islands freely meander around the planet's ocean and are occasionally briefly thrown above the planet by passing cyclones--exiting the atmosphere completely for a brief period. The islands soon violently fall back to the planet's ocean, often briefly submerging as they land.

To reduce risk of injury, the Nomai had built cyclone shelters, scattered throughout the Nomai ruins on the islands. These circular panels create a small cylinder of artificial gravity, oxygen (though not being a tree it will not refill the oxygen tank), and silence when a cyclone sends its respective island up into space, before shutting off once the island falls back to Giant's Deep.

The planet's ocean runs deep, with underwater traversal possible to an extent. However, a powerful water current prevents conventional descent to the Ocean Depths and the planet's Core, restricting underwater travel to being close to the ocean surface.

Ordinarily, cyclones start in a cluster at the South Pole, before adventuring all over the surface following unknown patterns, some occasionally disappearing and reappearing. Most of the cyclones rotate clockwise, generating upwards winds that fling objects through the atmosphere. However, one of the cyclones always rotates counter-clockwise, and pushes objects down instead of up, with enough force to bypass the deep water current and allow access into the Ocean Depths.

At the North Pole is a giant, stationary, impassable cyclone, which hides the fifth island containing the Tower of Quantum Trials. Gabbro's ship can also be found drifting around on the ocean surface.


Ocean Depths[]

The Ocean Depths are the section of the planet's ocean between the deep water current and the planet's core. The Depths are inhabited by Jellyfish, a giant species of medusae that are immune to the powerful electrical currents surrounding the core. This barrier prevents the player from reaching the planet's core, and touching either the barrier or a Jellyfish's tentacles will cause a powerful shock.

The Jellyfish are able to freely pass through the electric barrier into the core, as their bodies are insulated from electricity. It is possible to hide in a Jellyfish's body to pass through the barrier as they periodically ascend/descend through it.

Instead of using the counter-clockwise cyclone, it is possible to force your way into the Ocean Depths by flying the ship at more than one kilometer per second towards the centre of the planet. Doing so will grant an Achievement.

The Planet's Core[]

The planet's core is composed of a dark forest of coral, only lit by sparks of electricity and jellyfish. The ship or player will be slowed to 5 m/s top speed by the dense water. The Probe Tracking Module is found in one of the coral branches, having sank there at the start of the loop after the Cannon's destruction.

The older Orbital Probe Cannon components, which fell into the core while initially constructing the Cannon, can be found near the backside of the probe tracking module.

Flora & Fauna[]

The only readily observable life on the planet is a species of enormous jellyfish, which lives in the planet's Ocean Depths and Core. They are significantly bigger than the ship and will electrocute and damage the ship's electrical systems and/or suit's HUD when touched on the outside. It is unknown how they obtain energy or reproduce.



Texts and recordings[]


  • Instead of using an anti-clockwise tornado, a player can also slam their ship into Giant's Deep with such incredible speed that they can penetrate through the dense upper layer of liquid that the islands/tornadoes reside on. This can only be done with no less than a minimum flight-speed of about 10000m/s, and requires the player to go so far away from the planet to get the running start that the planet will actually un-render entirely. This however can prove fatal and more dangerous than using the counter-clockwise tornado, as there is a small chance the player might actually land on an island instead of the water upon entering Giant's Deep. At this speed it will obliterate their ship immediately, ending their session.
  • Unlike the first four planets (and the special case of Dark Bramble), the surface of Giant's Deep does not experience a day/night cycle. Instead, the faint glow of its atmosphere lights everything in the same green haze, regardless of time.
  • Giant's Deep was instead named "Gale Giant" in the pre-alpha of the game. It is possible to see the pre-alpha trailer on Alex Beachum personal youtube channel.