This is a simple sound replacement mod that changes all of the ambient cave noises to quotes from Cave Johnson, primarily from Portal 2. There are a few lines from the Perpetual Testing Initiative, and a select few from other DLCs.
This mod is still in development, so here are some things I would like to add:
Echo / distance in the sound effects
Subtitles
Different chance for each voiceline
Location-based lines
Official ports to Neoforge and Forge.
For now, use Sinytra Connector and Forgeified Fabric API to hear Cave in your Forge and Neoforge modpacks.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 26.1.2
- 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 Modrinth — 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 cavejohnson-1.0.0.jar — drop this file into the mods folder
- Download size: 6.1 MB
- Download link checked 20 Aug 2026 — working
These come from our own check of the pack file, not from the source page.