If you downloaded this file from an untrusted third-party site, please be extremely careful. Compressed files from unofficial sources frequently contain malware or adware. 📂 What This File Likely Contains

: Once extracted, the resulting folder is usually placed in the game's designated directory: PC VR : AppData\LocalLow\Stress Level Zero\BONELAB\Mods 🛡️ Recommended Safe Modding Alternatives

To avoid dealing with risky external split archives entirely, it is highly recommended to use the official in-game modding tools. features a built-in repository that pulls directly from safe, verified community sources.

If this is a legitimate community-made mod or map package, it is likely the first segment of a split archive. Because high-resolution VR environments and asset packs can be massive, creators often split them into multiple parts (e.g., part1.rar , part2.rar ) to bypass upload limits on file-sharing sites. This specific file likely houses: