Cavern Calamity Addon
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Addon By Rune the Shadowmage
Biomes
Jasper Caves
Jasper Caves add a new Amethyst variant, Jasper — a red version of amethyst. You can also craft a new weapon: the Jasper Kunai.
Kyanite Caves
Kyanite is another amethyst variant (blue). You can craft Kyanite Kunai from this biome.
Amethyst Caves
Amethyst Caves are focused on amethyst and include calcite mixed into the biome.
Slimy Sewers
The Slimy Sewers contains a large amount of slime — ideal if you need slime quickly.
Glowing Mushroom Caves
Spawns exclusively under mushroom islands; the most peaceful of the caves.
Glimmering Lush Caves
This biome contains many new glowing plants; very few mobs spawn due to constant light.
Spider Caves
Filled with silk and webs. Cave spiders naturally spawn here. A dangerous new block, Spider Eggs, explodes into 10 baby spiders when broken or stepped on.
Lichen Caves
Lichen Caves are filled with glow lichen.
Aether Caves
A glowing crystal biome where most mobs can't spawn. Introduces a new mob: the Pixie.
Horrid Caves
Filled with spore blocks and the hostile Hallow mob.
Under Forest
The Under Forest contains underground pale oak plants and trees. Lava cannot spawn here.
Sodalite Caves
Filled with a blue stone. On the roof you can find Energized Sodalite which can drop sodalite fragments used in crafting.
Wilted Garden
A withered version of lush caves, filled with wither skeletons and wither-themed content.
Hotsprings Biome & Caves
Hotsprings biome appears near deserts and mesas, filled with lava and blackstone, and spawns Magma Cubes in the overworld. Hotsprings Caves also spawn underground.
Hyperion Forest & Caves
Hyperion Forest features extremely large trees with roots extending underground; Hyperion Caves are the subterranean counterpart.
Items
Weapons
Kunai: a spammable, cheap throwable item.
Greatswords: much stronger than normal swords. They inflict blindness and slowness on hit, but the wielder receives Weakness for 5 seconds after hitting unless the greatsword has Sharpness, which reduces the penalty.
Toolsets
Titanium: Comparable to iron for damage and mining speed, with slightly more durability than diamond. Found in the Stone Layer.
Kyanite: Similar stats to diamond but less durability than iron. Found in the Kyanite Caves and the Heavenly Tower structure.
Cobalt: Roughly the same as iron; tools gain Crushing (increases effectiveness against modded blocks). Found in the Deepslate Layer.
Aetherium: Similar to diamond with slightly less durability and armor defense. Found in the Aetherium Caves.
Rose Gold: Armor equals iron; tools match gold mining speed but with higher durability. Obtained via crafting Rose Gold Alloy and smelting.
Staballoy: Like titanium but with greater durability. Crafted from Staballoy Alloy and smelting.
Jasper: Crafted in the Soul Forge. Slightly stronger defense than Netherite but much lower durability. Jasper Forging Templates are found in Stone or Deepslate Vaces.
Platinum: Upgraded titanium items with increased defense and doubled durability. Found in the Deepslate Layer; Forging Template in Underground Ruins.
Palladium: Second strongest toolset in the addon, stronger than Netherite. Palladium Debris is found at Y=55 and below.
Exodium: The strongest toolset — unbreakable with extreme stats. Found in the Wilted Garden; Forging Template dropped by the Floral Amalgam boss.
Misc Ores
Sulfur: Used to craft Gunpowder alternatives, colorful smokebombs, and Firework fountains. Stone-layer exclusive ore.
Onyx Quartz: A black variant of Nether Quartz. Stone-layer exclusive ore.
Uranium: Used to make Rad Powder (an upgraded gunpowder), part of Staballoy Alloy, decorative blocks, and can boost Copper and Iron golems. Deepslate layer ore. Warning: the ore and blocks damage nearby players who aren't wearing Rad Away Bands.
Other Items
- Silk Balls - spawn a cobweb on mobs they hit; dropped by Spiders.
- Flint Caltrop - throwable spike that damages anything contacting it.
- Golden Minecart - 10x normal minecart speed, can detach from rails.
- Energized Mining Helmet - emits light while mining.
- Bomb - throwable explosive.
- Musical Instruments - play sounds (audio is secondary).
- Magnet - pulls in nearby items.
- Magnet tools - pull in items on block break.
- Geodes - throwable items that produce broken geodes for stonecutter use.
- Vaces - naturally spawning mini chests throughout the world.
Potions
- Mining Potion - Haste I for 90s and Night Vision for 2 minutes. Brewed with Golden Berries.
- Aether Potion - Speed I for 90s and Slow Falling for 2 minutes. Brewed with Aether Fruit.
- Mustard Gas - Instant-kill if drunk; brewed with sulfur. Can be a splash potion that damages nearby entities.
Structures
Buried Church: Home to Weeping Angels — immortal mobs that behave similarly to the Creaking. To loot, you must find a way to always look at them.
Tower of Crystals: Extends from the bottom of the world to Y=40. Each floor contains loot and 1–2 monster spawners.
Ruins: Destroyed buildings that spawn underground.
Labyrinth: Filled with spawners and chests.
Undead Mineshaft: Packed with boosted mobs and increased loot.
Underground Outpost: Filled with illagers, including a new block-breaking illager and a tamable Allay variant at the top. The Allay variant is tamed with Glow Berries and emits light.
Ancient Forge: Contains the Soul Forge used for endgame Cavern Calamity crafting.
Sword Shrine: Rare surface structure found via a one-block gap. May contain an iron sword, wooden sword, or the special Hero's Sword with a unique ability.
Mobs
Mimic: Attacks like slimes and spawns by replacing chests in structures. After about 2 minutes without a target, it reverts to a Mimic Chest. You can Silk Touch the chest and carry it.
Hallow: Melee hostile that hits hard and inflicts blindness.
Pixie: Tamable passive mob. Tamed with Aether Fruit (rare from Aether Vines). Provides Speed or Slow Falling bonuses depending on color.
Molten: A zombie-like mob that spawns in lava. When it exits lava, it leaves a trail of fire.
Gem Crawlers: Passive mobs that fear all other mobs including players. When killed they drop the ore shown on their back.
Creeder: A hybrid of a Spider and a Creeper.
Light Allay: Found in the Underground Outpost, tamable with Glow Berries and emits light as it follows you.
Sodalite Energizer: Shoots blue projectiles at nearby players.
Mineologer: Similar to a vindicator but can break blocks.
Boss Battle
Floral Amalgam (Boss): Uses unique attacks such as summoning damaging spores, erupting vines, dashing strikes, and more. Drops the Exodium Forging Template on death. Summoned with the Genesis Seed (rare drop from wither skeletons); the seed can only be planted on Withered Moss under Y=0.
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