Sideload ((free)) - Bonelab

Bonelab Sideload: The Ultimate Guide to Unlocking Mods, Custom Avatars, and Full PCVR Power

Bonelab—the physics-based action-adventure title from Stress Level Zero—is often hailed as the Garry’s Mod of VR. Its core appeal lies not just in the gripping campaign or the "Marrow" physics engine, but in its deep, built-in modding support. While the in-game mod repository (Mod.io) offers a safe and easy way to download content, true power users know that the magic happens when you learn how to Bonelab sideload content.

But what does "sideloading" actually mean within the context of Bonelab? Simply put, it is the process of manually transferring files (mods, code mods, or full PCVR versions) from a computer directly into the headset’s internal storage, bypassing the official in-game browser.

Whether you are using a Quest 2, Quest 3, Quest Pro, or a PCVR headset, mastering the sideload process is the only way to access custom avatars, scripted mods (like guns that shoot lightning or portal guns), and the infamous "Official Bonelab Mod" SDK content that isn't filtered by Mod.io. bonelab sideload

This article will serve as your encyclopedia for everything related to Bonelab sideloading. We will cover why you need it, the tools required, step-by-step instructions for every headset, troubleshooting common errors, and the best places to find sideload-only mods.

4.1. Enable Developer Mode on Quest

  1. Create a Meta Developer organization (free).
  2. In the Meta Quest mobile app → Headset settings → Developer → toggle USB Debugging.
  3. Reboot headset.

Step 1: Install SideQuest on your PC

Download SideQuest from sidequestvr.com. Install it, then open it. Connect your Quest to your PC via USB. Put on your headset—you will see a popup asking "Allow USB Debugging?" Click Always allow and then OK. Bonelab Sideload: The Ultimate Guide to Unlocking Mods,

3. Nexus Mods

While historically for flat-screen games, Nexus has a growing Bonelab section. It is excellent for texture replacers and model rips (e.g., Master Chief, Garfield).

Bonelab Sideload Review – Unlocking the True Sandbox Potential

2. Early Access & Patreon Content

Many top-tier mod creators release their work first on Discord or Patreon. These files never hit Mod.io. If you want the latest custom campaign or the highest-quality Spider-Man web-swinging avatar, you must sideload it. Create a Meta Developer organization (free)

Part 6: The Best Sources for Sideload-Only Bonelab Mods

You cannot find these on Mod.io. You must sideload them.

7. Forensic Detection (for developers or anti-cheat)

To detect sideloaded mods:

  1. Check file hashes of all .marrowmod files against mod.io’s manifest.
  2. Enumerate files in Mods/ – any file not listed in the game’s internal mod_manifest.json is sideloaded.
  3. Monitor code patches – mods that inject into libil2cpp.so can be detected via integrity checks.

Step 4: Transfer the Sideload Mods

  1. Download a Bonelab mod from a trusted source (see Part 6).
  2. Ensure the mod is for Quest (Android) . PCVR mods will not work here.
  3. Drag and drop the mod folder (not the .zip file) into the Mods directory in SideQuest.
    • Crucial: If the mod is a .bonelabmod file, you drop it in raw. If it is a loose folder containing a manifest.json, drop the entire folder.