The materials in Powder are small differently colored 1-pixel particles. These can be arranged to 6 categories: * Liquids - Liquids flow and become a pool * Powders - Powders create towers when stacked on themself * Solids - Solids stay statically in the air, usually inaffected by other materials * Invisibles - Invisibles cannot be seen * Explosives - Explosives cause large explosions * Utilities - Utilities are just about everything else that you can add to the field.