Lore

The Calamity Mod and much of its contents have a rich lore associated with them. While most of it is unnecessary to the central gameplay, it can be read and understood as a means to make the world feel more alive and give bosses and items more purpose.

Lore Items
Lore Items are items with a piece of lore written into them, and are dropped by their respective boss on their first kill. They are also able to be crafted using Victory Shards and the boss's respective trophy. The descriptions of these items are insights and commentary on both locations the player has been to and bosses the player has slain. In addition, most of the lore items provide the player with buffs and nerfs depending on the item, which can be toggled by favoriting or unfavoriting the item in question.

Item Tooltips
Certain items contain lore in their descriptions, hinting at or stating pieces of the overarching story. Dedicated content is usually excluded from this list.

Quotes
Some vanilla Town NPC dialogue also hints at characters or events in the mod's lore. The mod's own Town NPCs also have dialogue centered around their own roles in the lore.

Boss Lore
Most Calamity bosses have their own lore, which detail their origin, history, and other information.

Hive Mind map 2.png The Hive Mind
===    The Perforators ===

Astrum Deus map.png Astrum Deus
===   Profaned Guardians ===

Providence map.png Providence, the Profaned Goddess
===   Sentinels of the Devourer ===

Biome Lore
Lore about the custom biomes that the Calamity Mod introduces, detailing their history and creation. These entries can also be found on the official forum thread.

Armor Set Lore
Lore detailing characteristics and origins of certain armor sets from the mod.

Town NPC Lore
Lore about the multiple Town NPCs the mod adds into the game, detailing their history and personality.

Other Lore
Other lore that is not related to Calamity bosses or biomes, but related to important figures, information and events that happened before the start of the game.

Trivia

 * The Lore items were written by the Tyrant King, Yharim.
 * This is especially apparent with the mention of controlling Queen Bees, knowledge of the Mechanical Bosses' history, apparent hate for The Underworld and Brimstone Crag, mention of the Ravager being built in an attempt to halt his onslaught, referring to Yharon as a "faithful companion" and referring to Supreme Calamitas as one of his cohort.
 * The Abyss is the only biome without official lore, with only a few lore fragments on Silva's lore.
 * The phrase, "Your impending doom approaches..." on the Lunatic Cultist Lore Item is a nod to a similar Status Message when the Moon Lord is being summoned.
 * Only a few biomes have Lore items, meaning the rest likely have a Lore item to be implemented or do not have connections with the Lore.
 * The stat boosts given by the Lore items were inspired by the use of memories in Sekiro: Shadows Die Twice to boost attack power.
 * Statis' lore entry contains mentions of three items bestowed to him, two of which being a set of armor and a certain equipment. The final is referred to as a kunai, which could reference the Cosmic Kunai.
 * Draedon and Yharim currently are the only major lore characters without dedicated entries.
 * The fact that the Blood Moon lore item drops from the Lunatic Cultist, and the mention of the "wealth of cosmic understanding" that some people learned from it, may imply that the Lunatic Cultist got its powers from the Blood Moon.
 * King Slime's Lore Item mentioning that only a fool could be caught by King Slime suggests that the Ninja inside got caught by it during the attempt to hunt it down.