Sunshine Island is my favourite

My favourite game is Sunshine Island. You manage 3 isles where you can farm carrots or wheat, dig iron ore or gold etc. You can also produce things like wheat or silk and sell everything on a market place, ship or plane. A big fun factor is, that you have challenges with other players. You can also enter a guild and cooperate with players all over the world. The game works fine without buying anything extra. I really love it.