Recent years has seen Houdini attract attention to it's node based procedural system or combination of various native workflows together with custom authored tools in terms of hard surfacing via artists willing to invest the time and effort to do so.
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Here is a mix of Modelling tutorials. Next stop procedural modelling,rigging, animation and then onto simulation magic. Time to get on it!
Houdini Game Development
https://www.sidefx.com/industries/games/
Showreel
Indie
Terrain Tools