Assets can use for the use of a commercial game? Thank you. 
What assets?
Do you want assets, or are you talking about the Island demo assets?
If Unity provided assets (shaders/islandDemo/demos on site), yes you can use them for any product you want.
These too?
The brief version of the license for each of the packages is stated on the page:
What is “non-commercial?”? :?
you may use them in short