For technical details about raw resources including a side by side comparison of all of these resources at once, see also the article List of Refined Resources.

Refined Resources are items which are derived from a raw resource but need additional processing from either a tool or a building. Many of these items require buildings that involve a long chain of construction tasks before the ability to make them becomes available, thus these items are not available in the beginning. There may also need to be some research performed for some of these refined resources before the building is available for that resource to be made.

The items in the following list are materials which are needed to make other items or buildings and can't be considered to be a tool, musical instrument, or an upgrade.