Planet Blender shares a nice collection of stones to be used in your projects. Of course, the original purpose of this collection is to be used in renders where hundreds/thousands of assets can be used with no major problem. For gaming though, polycount it's critical. But one way of using it might be just using a few of these at different (bigger) scale to populate some natural landscapes. The advantage is that they all have materials, randomly varied.
Here are some more details and the download link.
Materials that change for every particle
You don't need to be the smartest person in the world to create a
realistic stone material. You take a nice stone texture, one diffuse and one glossy shader, mix them, add some displacement and that's it. But if you use only one material your image would be far from being realistic, so you need to make more materials.
For this collection I made four materials and each of them will be different for every stone in your image. Every material uses two stone textures and mixes them with a random color, a simple but effective way to get a big variation of stones. In case you don't have any stone textures this download will include the textures pack that can be downloaded from my site, click here to see the textures.
Here are some more details and the download link.
Materials that change for every particle
You don't need to be the smartest person in the world to create a
realistic stone material. You take a nice stone texture, one diffuse and one glossy shader, mix them, add some displacement and that's it. But if you use only one material your image would be far from being realistic, so you need to make more materials.
For this collection I made four materials and each of them will be different for every stone in your image. Every material uses two stone textures and mixes them with a random color, a simple but effective way to get a big variation of stones. In case you don't have any stone textures this download will include the textures pack that can be downloaded from my site, click here to see the textures.
