CONSUMABLE MATERIALS are items that are used in recipes/formulas to make new items, upgrade items you already have or to strengthen yourself or your characters permanently.
Are not used by themselves but as a part of formulas/recipes to create something new
Are consumed/depleted after use
Are not attached/equipped to characters, units or buildings
Equipment pieces or character shards in RPG games (e.g. Hero Souls in Heroes Charge)
Ingredient items in crafting-based games. (e.g. Wheat and Eggs in Hay Day)
A single entity in a game can be classified as only one of the following: EQUIPMENT, PERMANENT BOOST, CONSUMABLE BOOST, CONSUMABLE MATERIAL! For example, if an item grants benefits ONLY if its attached to a character, it is counted as EQUIPMENT, even if it’s consumed when used.
If an item doesn’t give any gameplay bonuses, i.e. it has only decorative purpose, it is not counted as any of the above