Progressive Core is a rather simple but big mod which adds a variety of valuable ores, tools, weapons, armor, accessories and machines to the game.
The ore system is as the mods name suggests progressive and each ore/alloy has a certain tier.
Tier 0: Wood
Tier 1: Stone, Flint, Leather
Tier 2: Copper, Tin, Iron
Tier 3: Bronze, Tungsten
Tier 4: Steel, Obsidian
Tier 5: Hellsteel
Tier 6: Titanium
Tier 7: Mithril, Orichalcum, Adamantite
To get to the next tier you need ores/alloy from the previous tier.
Ore generation, tool and armor stats as well as pretty much everything else is configurable in your config file.
For the full original description see the original page.
