More ads than game play. Try another app.
My experience: Looked interesting. Loaded game from ad on another game. Started app, ad, game, ad, game, ad, free hint? (accepted), ad, deleted app. Wrote this review.
If you enjoy watching ads twice as long as game play, you may enjoy this game. The game is actually pretty good, but when playing is about 1/3 of time versus 2/3 of time watching ads, the cost-benefit quickly expires and the game is not playable.