The safest and most stable way to play BONELAB is through the Meta Store or Steam .
.part1.rar indicates it is the first piece of a multi-part compressed folder. Important Instructions for Split Archives To use this file, you generally need to follow these steps: BONELAB.v25.01.2023.part1.rar
If you tell me (e.g., install a mod, update the game, or fix an extraction error), I can give you more specific help. The safest and most stable way to play
If you get a "Checksum error," it usually means one of the parts was downloaded incorrectly. ⚠️ Safety & Authenticity install a mod
If you are looking for mods rather than the game itself, use mod.io , which is the officially supported platform for BONELAB content.