Rock Gas

Rock Gas is an in-game element classified as a gas and represents the vaporized form of ordinary rock material. It is not a naturally occurring atmospheric composition in starting biomes but is produced by specific geological processes within the game world.

Rock Gas is produced by a Volcano after the Volcano has been tuned five times. When that tuning threshold is reached, the Volcano’s usual solid or molten rock outputs undergo a phase change and are emitted as Rock Gas. This makes Volcanoes the primary and canonical source of Rock Gas in a colony that has progressed to repeated Volcano tuning.

Because Rock Gas is the gaseous phase of rock, it occupies gas cells and must be handled using the game’s gas-management systems (venting, filtering, piping where applicable, and containment with appropriate materials and thermal control). Interaction with Rock Gas follows the standard rules for gas elements in the game: it displaces or mixes with other gases in a cell and can be moved by gas flow and pumps; control requires buildings and pipelines or gas valves designed for managing gases.

Practical notes for handling and planning around Rock Gas:

• Expect Rock Gas to appear only after a Volcano has been tuned five times; plan containment and hazard mitigation in advance of repeated tuning.
• Treat Rock Gas like any other gas element for routing and isolation purposes: use gas vents, gas pumps, and gas filters to capture or redirect flows.
• Because its origin is volcanic, locate gas-management infrastructure away from critical living spaces and sensitive machinery to avoid accidental contamination from volcanic emissions.
• Monitor Volcano tuning progress if you intend to exploit or avoid Rock Gas production; repeated tuning changes a Volcano’s output profile and can introduce Rock Gas where it did not previously occur.

Rock Gas is listed in localized materials as "Rock Gas" in English; other language sources correspondingly identify the same element under their local names.