Overall the game is fun. With that said the game has 2 types of in game currency. Coins & Ammonites. They want you to watch 10 ads for just 1 Ammonite. And then all the items you need for the dinos aren't available unless you spend 100+ ammonites. You can also buy Ammonites @10 for $1. Also when you log onto the game you get around 8 pop ups. Half of which are trying to get you to buy special colored dinos for 50-150 Ammonites. Game also glitches when you use amber to buy items sometimes.