For those who do have the game, much of the "free" value comes from the extensive modding community:
: A popular free 2D alternative that focuses on the same ragdoll and physics experimentation found in BONELAB. Content Highlights BONELAB Free
If you aren't looking to spend money, several free "sandbox" games on the Meta Quest and Steam stores offer similar physics interactions: For those who do have the game, much
: While not a standalone game, the community has recreated much of the original BONEWORKS campaign within the BONELAB engine. BONELAB Free