Hey, sorry about it being unclear. Yes, you can freely use it in commercial game projects and attribution is not required
What I mean with that sentence is if you were to repackage the game assets and sell them as assets, for example in an asset pack.
But I encourage you to use them in your commerical game projects, and you can freely alter the models/textures to fit your game project in any way.
Hope that clears it up and if you have anymore questions just let me know