Chest Cavity
by TigerOfTroy
Chest Cavity, a Fabric storage mod, places a secondary inventory inside the player's body and ties its organs to health, breath, strength and healing.
What it does
The chest cavity is a separate inventory that the player opens with a chest opener item. Items stored there stay safe from the usual risks of carrying gear, so the mod suits players who want extra room without a chest in the world. Players can also remove items they consider unimportant to make space for other things.
Each organ is a stat in its own right. Hearts set maximum health, lungs control how long a player can hold breath, ribs reduce damage taken, muscles govern strength and speed, spleens speed up healing from food, kidneys filter the blood against poison, livers clear status ailments, and the spine lets the character move at all. Losing an organ or having a weaker one brings specific penalties, and some missing organs are fatal. The mod is listed under the Storage category, with Food and Utility as secondary categories.
Chest Cavity runs on the client and on the server, so the server and every player need it. Fabric is the only loader, and it needs Fabric API and Cloth Config API installed alongside. Files cover 1.16.1 – 1.20.1 across ten release versions, and the code is released under CC0 1.0 Universal, so it is open source.
Key features
Internal storage
A secondary inventory sits inside the body and is opened through a chest opener item.
Organ-based stats
Hearts, lungs, ribs, muscles, spleens, kidneys, livers and the spine each change a different player stat.
Penalties for missing organs
A lacking or weak organ can cause shortness of breath, slower healing, poisoning or heavier damage.
Item discard for space
Players can remove stored items they judge unimportant to free room for other items.
Compatibility
Latest build for each game version and loader.
1.20.x2 of 2 versions with builds
1.19.x3 of 3 versions with builds
1.16.x5 of 5 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 2
Use cases
Extra carrying space
Players who run out of inventory room in long trips can keep extra items in the cavity.
Survival with risk
Organ penalties and fatal losses make the stats part of the survival challenge.
Who it’s for: Players who want an alternative to chests for storing items, and players who enjoy survival rules tied to player stats. Server owners running Fabric can add it alongside the other required libraries.
Questions
Does Chest Cavity need Fabric API?
Does the server need Chest Cavity?
Which game versions does Chest Cavity support?
In the catalog
Chest Cavity is one of 4,058 Storage mods on ModsFinder, and one of 2,474 Storage mods for Fabric. 34,764 mods support Minecraft 1.20.1.
More from TigerOfTroy
Similar mods
What the author says
Chest Cavity lets you use a 'chest opener' to access a secondary inventory. There are some items already in it, but those probably aren't important so you can take them out to make room for other stuff*. It also adds a variety of drops that are similar to the junk you discarded from your extra storage.
Official listing
- Modrinth page
- modrinth.com/mod/chest-cavity
- Owner
- TigerOfTroy
- Published
- 2021-01-16
- Updated on Modrinth
- 2025-12-21
- Facts verified
- 2026-10-15