Astro Adds to Chest Cavity [Fabric]
Java mod listed for Minecraft 1.19. Downloads from the MC Java Mods app on Android.
⬇ Download on CurseForgeThe author built this one for Minecraft 1.19 on Fabric. On other versions it may install and then do nothing.
THIS MOD IS NO LONGER UPDATED
Adds various organs to chest cavity, mostly mechatronic
Requires Chest Cavity: Chest Cavity - Mods - Minecraft - CurseForge
Chest Cavity requires this specific cloth config: Cloth Config API (UNUSED) - Mods - Minecraft - CurseForge
0.0.1
In order of image below:
Abyssal organs: more defense, less metabolism
Actuator: Supernatural speed, poor strength
Copper Wiring: Exceptional nerves, pathetic defense
Copper Frame: Knockback resistant, poor defense
Phantom Pump: Average breath recovery/capacity, average endurance, poor buoyancy
Filter Pump: Average filtration, poor detoxification
Blood Pump: Pathetic detoxification, poor health, pathetic metabolism
Jump Shaft: Average speed, poor leaping, poor strength, impact resistant
Golden Wiring: Supernatural nerves
Clockwork Core: Poor speed, cripples endurance, poor defense, poor health, poor strength
Gem Holster: Slightly reduces speed, exceptional luck, slightly reduces buoyancy
Acid Mixer: Average nutrition, pathetic digestion
Steel Actuator: Pathetic speed, pathetic defense, exceptional strength
Steel Cable: Exceptional nerves, average defense, cripples metabolism
Steel Frame: Exceptional defense, slightly reduces metabolism
Steel Detoxifier: Poor filtration, average detoxification, poor endurance, reduces metabolism
Steel Core: Good defense, good health, cripples metabolism
Captured Soul: Supernatural buoyancy
Creative Soul [Creative only]: default organ scores of a default cavity
Iron Lung: average breath recovery/capacity, exceptional endurance
Heart of Gold: Poor luck, poor health, poor defense, cripples strength
Hasty Muscle: Exceptional speed, poor nerves, pathetic strength
0.0.2
New organ scores:
Resonance: On taking damage from a mob, push away all nearby mobs
Neutrally Fluid Buoyant: Neutrally buoyant in water and lava
Panicking: On taking damage from a mob, increase your speed temporarily
Shrieking: On taking damage from a mob, push away and damage all nearby mobs
In order of image below:
Swim Bladder (Creative Only): Good swim speed, neutrally fluid buoyant
Resonant Core: Resonant
Adrenal Catalyst: Good Panicking, Resonant
Adrenal Shrieker: Shrieking
Tumor (Creative Only): nothing yet
Circuitry: Good nerves, cripples endurance, poor health, pathetic metabolism
Super Capacity: Exceptional Endurance, Average Nerves
Nutrient Mixer: Average Nutrition, Pathetic Digestion
Electrolyzer: Good Water Breath, Good Breath Capacity
Acid Mixer (REBALANCE): Pathetic Nutrition, Slightly Reduces Endurance, Average Digestion
Steel Detoxifier (REBALANCE): Poor Filtration, Poor Detoxification, Poor Endurance, Reduces Metabolism
Steel Distributor (STEEL CORE REBALANCE): Poor Defense, Good Health, Reduces Metabolism
Steel Actuator (REBALANCE): Pathetic Speed, Pathetic Defense, Exceptional Strength

0.0.3
In order of image below:
Draconis Fundamentum: Buff purging, cripples endurance, cripple health, allows flight, cripples metabolism
Cluster Bomb (Creative Only): Cluster explosion, upon taking damage, nuke everything
Crystal Core: reduces defense, poor health, good strength, poor resonance
Crystal Rod: average speed, slightly reduces defense, supernatural strength
Sharded Rib: knockback resistant, pathetic resonance
Rejuvenated Rib: reduces endurance, exceptional defense
Rejuvenated Spine: cripples endurance, good nerves, good defense
Reanimated Heart: reduces endurance, good health, pathetic metabolism
Reanimated Kidney: good filtration, pathetic detoxification, reduces endurance
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Note: the recent chest cavity version makes nerves more useful, affecting mining and attack speed
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.19
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as ccastroadds-0.0.1+1.19.jar — drop this file into the mods folder
- Download size: 162 KB
- Download link checked 15 Oct 2026 — working
These come from our own check of the pack file, not from the source page.