Legends of Tolria The Galactic Game

Environments · Regional environment

Oceanic Trench

Subduction trenches cut miles below the surrounding plain, and the pressure at the bottom is roughly a thousand atmospheres. Only purpose-built hulls reach the bottom, and any other vessel is crushed on the way down. The animals living there are endemic to a single trench, and the walls hold debris that has fallen in over the age of the plate.

Regional environment Aquatic (water)
Subsurface

Crossing it

Navigate
DC 20
Forage
DC 20
Notice
DC 17

Only a trench-rated hull can enter, and no partial approach exists.

Exposure

  • Extreme Cold

    Temperatures below about zero degrees Fahrenheit, or any water near freezing, made worse by wind.

    CON save, DC 10, rising by 1 for each hour after the first. End of each hour. One level of exhaustion.

    • Cold-weather gear

      Proper layers, a sealed suit or a heated shelter removes the save. Wet layers give disadvantage on it instead.

    • Immersion

      A creature in near-freezing water makes the save each minute instead of each hour, and is Incapacitated at three levels of exhaustion.

    • Gear

      Unheated power cells lose half their charge, and any check made with bare hands after an hour of exposure has disadvantage.

    • Adapted

      A creature native to a cold world, or with resistance to cold damage, ignores the save.

In play

  • Pressure

    Only a trench-rated hull enters. Anything else takes 4d6 bludgeoning damage per minute below the abyssal plain, ignoring resistance and immunity.

  • Absolute dark

    Heavily obscured throughout, because no daylight reaches the trench.

  • Endemic

    A trench population is isolated from every other trench. What is found in one is found nowhere else on the world.

  • Ascent

    Rising more than 200 feet in a round from trench depth requires a DC 15 Constitution save or a level of exhaustion and the Poisoned condition for an hour.

Variations

  • Trench wall

    Near-vertical, ledged rock holding debris the plate has caught.

  • Trench floor

    The bottom of the axis. Sediment miles thick over the subducting plate.

Worlds it occurs on

  • Aquan A world that is liquid down to the core, with no land, no shelf and no solid surface to stand on.
  • Terran (Oceanic) A world of ocean from pole to pole, with land only where a volcano has kept up.
  • Terran (Verdant) A rocky world with liquid water, breathable air and a magnetic field to protect them, rare and the cause of most wars.

Built for this

Found here (11)

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