I LOVE this game, but unfortunately can't give it 5 stars because everytime there's an update, it takes up to 3 days for me to actually be able to play. I've left it loading without touching my phone for 30 minutes and it just wont load. The game is entertaining. I love the missions, the animals available and all the decorations available for the zoo and its enclosures. Once you get far into the game, you need lots of diamonds to buy certain things, but as you level up, you are given some.