Talk:Tolzar's Optical Oracle/@comment-25123396-20171023222538/@comment-4738639-20171024095559

This isn't forced advertising, it is a voluntary option to view/play an ad and earn a gem.

I think it is a way for them see if players will use the incentive of earning gems to view ads which they can be paid to incorporate into the game by other sources to increase revenue on their end without interrupting gameplay.