→ Split it into fragments for after it breaks (Blender) → Import the intact rock + fragments together into Unity → Attach a script that makes the intact rock disappear and the fragments appear and ...

These samples are broken up into projects based on high level functionality. These are intended as jumping off points for your own development. These have not been tested, and are not guaranteed to ...

You just need to clone or download this repository and open the project with Unity. It's made in Unity v2020.1.9f1, but other versions will surely work fine ...