Natural gas

Natural Gas is either a helpful or harmful hazard appearing in certain fan-made Pikmin games. It takes the form of various colored gasses seeping from the earth via cracks in the ground. While normally these gasses would dissipate in the air, underground they can fill up rooms and causes various effects when inhaled. This includes effects such as affect the physics or speed of certain facets of the game, change the properties of certain enemies, and change the abilities of certain Pikmin. While natural gas isn't harmful to the health of the Pikmin or captains, they can screw up certain strategies should you not become prepared.

=In fanon games=

In Pikmin: Spark
Natural Gas is a nonlethal hazard appearing in Pikmin: Spark. It takes the form of a foggy mist-like substance seeming from cracks in the ground. Normally they would simply dissipate in the atmosphere but in underground areas such as the Cavern of Cobwebs, Rust Labyrinth and several dens they can quickly fill up a room and affect the general gameplay. Natural gas comes in a variety of colors that affect what the gas does to those who breathe it in. Red gas makes Pikmin heavier meaning they can't be thrown as high, but they and their predators are much faster. Green gas makes Pikmin be able to be tossed higher, but they and their predators become slower as a result. White gas doubles the attack power of Pikmin but lowers the defense of the captain and enemies by half. And finally purple gas doubles the defense of captains and enemies and halves the attack power of Pikmin. Natural gas can be cleared by opening vents allowing the air to be better filtered.