SyntaxBomb - Indie Coders

..here is Makan Gilani take on procedural animation in 3D..
https://80.lv/articles/animating-beasts-using-the-procedural-way-in-unity/

In this particular case, he is using Unity, but my question is, is there any library for such thing out there available that can be either purchased or downloaded(if free), that you know about? Im toying with idea to start developing some game out of large numbers of levels that i have completed, but i have no characters to populate world/story, hence request for such library, as it is one described by Makan Gilani as i dont have time to bother with animations for characters, rigging, etc etc ..