by AZmaybe9·Simulation
Images © AZmaybe9. Used for product review; image policy.
Stands out in the superhive library for making bone physics approachable: two clicks to apply, collision boxes you can adjust at any time, and IK control you can dial off and back on mid-animation.
Gravity Collider Physics Plugin brings bone physics to Blender rigs in two clicks. Skirts, hair, armor jiggling, breasts and keychains all get basic physics through collision boxes set up in a bead necklace formation. The boxes are quickly adjustable whenever or however you want, and weight painting them is painless and powerful.
The plugin is extremely light, scales with the model, and exports to game engines. Because it uses IK, you can gradually turn the physics off for full control at any moment and gradually turn them back on again, so a perfect run isn't needed before you animate.
The menu shows in bone edit mode, and it should be applied while the model is in an active t-pose. It works across Blender 2.8 through 5.0 and is released under the GPL license. Documentation and a demo video are available, and it can be found in the superhive library.
Gravity Collider Physics Plugin is best for adding basic jiggle physics to skirts, hair, armor, breasts and keychains on Blender rigs, and for newcomers who want physics without the deeper setup so they can focus on animating.
Gravity Collider Physics Plugin is completely free to download and use.
Gravity Collider Physics Plugin works in Blender 5.0 and later, and the supported range runs from Blender 2.8 through 5.0. In Blender 2.8 it does run, though it produces a traceback warning that doesn't appear to affect general usage at first glance. Apply it while the model is in an active t-pose, and avoid stacking other bone modifiers when applying it, since that may cause glitchy behavior. If your rig has other modifiers, baking the animation or modifiers first is recommended.
Gravity Collider Physics Plugin is listed as free in this catalog. Licensing and download terms can change, so check the developer's page for the current details before you rely on it for a project. The plugin is released under the GPL license, and documentation is available. A free download has also been noted on Min's GitHub if you'd like to look at the source there.
Gravity Collider Physics Plugin uses IK, which lets you gradually turn the physics off for full control at any moment and then gradually turn them back on again. That means you don't need a perfect run before you animate: you can animate freely and blend the physics in or out as needed. The collision boxes themselves stay quickly adjustable whenever or however you want, so you can adjust the setup at any point during your work.
Gravity Collider Physics Plugin shows its menu in bone edit mode, so you'll find its controls there. It's meant to be applied while the model is in an active t-pose. When weight painting, be careful with Undo, since Blender might switch off the required Pin vertex group. On auto-rigs it works best when the bone chain is simple with clean parenting, and other bone modifiers shouldn't be in the stack when you apply it.
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