Making Money with Android

This complies with *policy ads?

In my application (a simple game), I want to put a button with the text “free game” or something similiar, and when clicked on take you directly to some game on google play.

This is compatible? Or rather, that pressing on the buttons display a interstitial?

The problem is that the button is in an ActionBar, so sometimes, depending on the device can only image of “free game” appears, in this case should show whether or if an interstitial?
Or it would also be the direct link?

Thanks and regards.