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Archives of Nethys

Archives of Nethys

Pathfinder RPG (1st Edition) Pathfinder RPG (2nd Edition) Starfinder RPG Starfinder RPG (2nd Edition)

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GM Core / Chapter 2: Building Games / Building Worlds / The World / Environment

Extreme Environments

Source GM Core pg. 135 Spring 2026, 1st Printing
Some adventures lead to fantastic reaches of the world or the multiverse that are seldom tread by mortals.

Aerial: A world might include windy realms of floating islands and castles in the clouds.

Glacier: Massive sheets of dense ice constantly moving under their own immense weight, glaciers are frozen wastelands riddled with columns of jagged ice and snow-covered crevasses.

Volcanic: Hellish landscapes of molten lava, burning ash, and scorching temperatures pose immediate danger.

Undersea: A subset of aquatic environments, undersea environments are those areas submerged beneath the waves.

Underground: Some worlds have deep natural caverns, while others have extensive winding tunnels and expansive realms below the surface.