It's a regular tycoon game, has ads to get prizes like 2x income, but also has mandatory ads that is pushes on you when you want to go to another location. The worst thing is that I had saved up 220k oil and sold it all for 60 per 100 oil and watched two ads for a 3x multiplier. It broke the oil counter and it went into the negatives so now I have to get all that oil back just so I can make money again. Easier to just uninstall and move on to another game.