Gas Management Guide: Gas Mechanics, Heating & Safety

Gases are a class of fluids in Mindustry with distinct mechanical properties and interactions separate from liquids. They are used as resources, ammunition, and environmental hazards; understanding their properties (flammability, explosivity, heat behavior, and status effects) is essential for safe, efficient base design and combat use.

Gas properties

• Type: Gases are categorized as "Gas" in the fluid system. They behave like other fluids for transport and storage but often have higher explosive or flammable potential than liquids.
• Explosivity and flammability: Many gases have high explosivity and/or flammability values. These determine how readily a gas will ignite or explode when exposed to damage, incendiary ammo, or heat. High explosivity means a gas can cause powerful explosions when ignited; high flammability means it spreads burning effects and applies fire status to entities hit by gas-based projectiles.
• Heat characteristics: Gases carry heat capacity and temperature values like liquids. Heat influences certain factory and turret operations and can interact with heat-management blocks (Heat Redirectors). Gases may absorb or release heat as they are moved or used, and incendiary behavior can be amplified by ambient or applied heat.
• Viscosity: Gases have viscosity values which influence how they flow through pipes and pumps compared to liquids. This affects pump throughput and how quickly a gas can be moved or exchanged in storage.
• Status effects: Standing on or being hit by a fluid can pass that fluid’s status effect to entities. Many gases therefore inflict status effects (burning, poisoning, slowing, etc.) when they contact units or buildings.

Gameplay consequences

• Storage and piping: Treat gas storage and transport with the same care as liquids, but with additional caution for explosive or highly flammable gases. Keep conveyors, vaults, and bridges containing flammable or explosive materials well away from reactors, active turrets, or front-line damage to avoid chain reactions.
• Defensive layout: Position gas tanks and any distribution blocks that may hold gases behind tanky walls and away from likely enemy paths and explosive sources. A nearby explosion can ignite or detonate gas stores and spread the destruction to adjacent distribution infrastructure.
• Combat use: Gases used as ammo or area denial resources often apply strong burn/explosion effects. Using these gases can be highly effective against clustered enemies but also risks collateral damage to your own structures if fires or explosions spread.
• Heat synergy: Some buildings require heat to operate and can benefit from locally high temperatures. Conversely, heat-producing blocks can increase the chance that flammable gases ignite or behave more dangerously, so manage heat flow (using Heat Redirectors) to avoid accidentally triggering gas hazards.

Practical tips

• Isolate volatile gases: Build separate piping and storage for gases with high explosivity or flammability. Use buffer tanks and distance to reduce the chance of a single attack destroying multiple stores.
• Use status-aware placement: Because fluids pass status effects to entities standing on or hit by them, place hazardous gases where they affect enemies (choke points) but cannot contact friendly units or critical infrastructure.
• Control heat paths: Heat Redirectors can funnel heat away or toward systems; be aware that redirecting heat into an area with flammable gas raises ignition risk. Small Heat Redirectors and Heat Redirectors do not accept heat from each other if their outputs face each other, preventing heat loops.
• Ammo considerations: When using gases as weapon ammo, remember their burning/explosive behavior will increase damage over time and area but may also harm structures. Balance firepower with safety.

By treating gases as fluids with specially dangerous flammability and explosivity parameters, and by managing heat and placement carefully, you can exploit gas-based weapons and industrial processes while minimizing catastrophic failures.