This puzzle game is easy to play but hard to solve within a game time. You have to concentrate to solve if you destroy this obstacle, which way the ship will go. it is because based on physics, each movement is real and fun to play! how to play this game 1. Sail needs to match the same color of the ground. 2. there is color switch bar in each stages. in the middle of stage, you need to sometime change the direction in order to reach the goal. there are more than 40 stages to play and more to come soon. Enjoy!