Can i use the unity assets in my project if i want do download in to Play Market

I mean is it legally to use this for free or even if i paid for this, can i use it in my game and don`t have any troubles withh assets author?

 

Yes. The unity assets are for you to use in your games. Same goes for assets in the Asset Store (though you should probably read the license that comes with it to be sure).

 

Just keep in mind that this applies for everyone and some of these assets are very well known.

 

So long as the asset does not say it is not for commercial use, you can use it in a paid game. There are a few tech demo projects from Unity which don't allow commercial use, for example.