Curse of the Calamity

Four calamities. One wounded world.

Each boss does not just wait in an arena: it corrupts the land around it, curses the living and changes how the world plays.

Azula, Vulturnus, Vaelen and Bellatrix

Minecraft 1.21.1 · Fabric · NeoForge

The Calamities

🔥 Vaelen, the Corrupted

Domain: Nether · Offering: Corrupted Totem

A master of the scythe who rots the land and corrodes armor and flesh. Learn his combos, parry his strikes and survive Inferno at half health. Below 25%, Cataclysm swallows the light.

⛈️ Vulturnus, the Stormbringer

Domain: End · Offering: Storm Chalice

A colossal leviathan above a floating fleet. It dives, climbs and unleashes the Fleet Vortex: ships tear from their moorings, spin around you in a closing ring, then return to their place.

🌌 Bellatrix, Empress of the Abyss

Domain: The Abyss · Offering: Abyssal Star

An aerial duel in a custom dimension with fully inverted gravity. Meteors, a black hole and a cosmic eclipse await.

❄️ Azula

Domain: Frozen sanctuary · Offering: Frozen Crown

Something whispers to you when you enter the world. Follow it, and a vault descends from the sky. Her Frost Clock slows your body, your aim and every sound while ice fills the arena in bullet-hell patterns. Her final special draws a giant snowflake into the ground, then shatters your screen.

She will not kill you. She will heal you, return your crown and tell you to come back better prepared.

Features

A world that fights back

Calamities invade the Overworld from altars
Curse zones spread and transform the terrain
Purify the land to restore it completely
Six additional enemy types, plus floating shrines and sanctuaries

Gear worth the fight

Signature weapons with their own combos
Upgrade templates and boss armor sets with real protections
The Calamity Astrolabe, a tunable compass that leads you to each altar
14 advancements in their own tab

Cinematic presentation

Summon cinematics with title cards
Boss dialogue and animated galaxy health bars
Bar markers that show where special attacks trigger
Custom sound effects and beat-reactive boss music

Built for real worlds

Arenas repair missing blocks in batches when a boss is summoned
Fleet Vortex never edits your saved world
Works on Fabric and NeoForge

Languages

🇺🇸 English · 🇪🇸 Spanish (Spain, Argentina, Chile, Ecuador, Mexico, Uruguay, Venezuela) · 🇧🇷 Portuguese (Brazil) · 🇵🇹 Portuguese (Portugal) · 🇷🇺 Russian · 🇨🇳 Simplified Chinese

The game language is detected automatically.

Found a mistake, or want your language added? Leave a comment or open an issue with the corrected text. Translations are one file: assets/curseofthecalamity/lang/en_us.json. Please keep %s and § codes as they are.

Requirements

	Fabric	NeoForge
Minecraft	1.21.1	1.21.1
Java	21	21
Loader	Fabric Loader 0.16+	NeoForge 21.1+
Required	Fabric API, GeckoLib 4.6+, Player Animator 2.0+	GeckoLib 4.6+, Player Animator 2.0+
Optional	Mod Menu	—

Commands

All commands start with /calamity and require OP or cheats enabled. Boss IDs: Vaelen, Vulturnus, Bellatrix, Azula.

Boss

Command	Description
`/calamity boss <bossId> spawn`	Summons the boss in its arena.
`/calamity boss <bossId> kill`	Defeats the boss and cleans up its events.
`/calamity boss <bossId> bring`	Teleports the boss to your position.
`/calamity boss <bossId> status`	Shows whether the boss is alive and its UUID.
`/calamity boss <bossId> locate`	Finds the boss and prints its coordinates.
`/calamity boss <bossId> tp`	Teleports you next to the boss, or to its arena if it is not alive.
`/calamity boss <bossId> phase <1-3>`	Sets the boss to a specific phase.
`/calamity boss <bossId> attack <attackName>`	Forces the boss to use a specific attack.
`/calamity boss <bossId> why`	Prints a diagnosis of the boss’s attacks.
`/calamity boss <bossId> trace <true/false>`	Turns attack tracing on or off.

Attack names:

Vaelen: leap_slam, fly_bomb, spin_attack, double_sweep, reaping_dash, rising_reaper
Vulturnus: lightning, hail, whirlwind, hurricane, chaos, fleet
Bellatrix: anti_camp, melee_reactive, combo, chase_strike, vortex, summons, spikes, eclipse, black_hole, island_dash, aerial_melee
Azula: needle_draw, frost_whorl, ground_seal, crossing_thrust, lotus_edge, crescent_fan, sword_rain, mirror_cross, ice_vortex, great_moon, aerial_pursuit, arena_pierce, half, final, slow, eruption_line, eruption_ring, eruption_spiral, eruption_star, eruption_lanes, eruption_trail, eruption_cage

Curse

Command	Description
`/calamity curse status`	Shows every active curse and its anchor position.
`/calamity curse reset`	Removes all curses and active bosses.
`/calamity curse <bossId> start`	Starts a calamity invasion at your position.
`/calamity curse <bossId> stop`	Cleanses that invasion.
`/calamity curse <bossId> locate`	Prints the epicenter of that calamity.
`/calamity curse <bossId> tp`	Teleports you to that calamity.

Altars

Command	Description
`/calamity altar list`	Lists the altars and curse zones in your current dimension.
`/calamity altar tp <index>`	Teleports you to the altar with that number from the list.

Structures and dimension

Command	Description
`/calamity structure tp arena <bossId>`	Teleports you to the entrance of that boss arena.
`/calamity structure tp sanctuary`	Teleports you to the Abyssal Sanctuary.
`/calamity structure generate arena <bossId>`	Generates or restores that boss arena.
`/calamity structure set_arena <bossId> normal`	Sets the arena to its normal variant (Bellatrix only).
`/calamity structure set_arena <bossId> shattered`	Sets the arena to its shattered variant (Bellatrix only).
`/calamity dimension tp abyss`	Teleports you to the Abyssal Sanctuary.

Effects and debug

Command	Description
`/calamity effect <targets> <effectId> true`	Applies a custom effect to the selected entities.
`/calamity effect <targets> <effectId> false`	Removes a custom effect from the selected entities.
`/calamity debug shatter [ticks]`	Plays the screen-shatter effect (10 to 300 ticks, default 60).
`/calamity debug overlay <bossId>`	Plays a boss screen overlay (not available for Azula).

Effect IDs: inverted_gravity, calamity_curse, corrupting_decay, conductive, astral_collapse

Azula debug

Command	Description
`/calamity azula <entity> attack <0-21>`	Plays an Azula attack pattern. You must be in survival near her.
`/calamity azula <entity> repeat <-1 to 20>`	Repeats an attack pattern (-1 stops it).
`/calamity azula <entity> phase <0-3>`	Sets her phase.
`/calamity azula <entity> health <1-100>`	Sets her health percentage.
`/calamity azula <entity> flight <true/false>`	Turns her flight on or off.

FAQ

Is it multiplayer compatible?
Yes. Boss rewards, Azula’s gifts and advancements consider nearby players.

Can I disable Overworld invasions?
Yes, from the mod settings screen you can turn them off globally or per boss.

Can I use it in a modpack?
Yes. You can include it in any modpack, public or private.

“A calamity is not a monster. It is a wound in the world that learned to walk.”

Minecraft is a trademark of Mojang AB. This project is not affiliated with or endorsed by Mojang or Microsoft.