Sheep is one of the Physics Games that you can play on UGameZone.com for free. Control the UFO by simply tapping left or right half of your screen to change direction, or both of them to fly up. The goal is to steal cute little sheep from Wild West farm and deliver them to your space platform. Avoid obstacles. There are 30 Different Levels included in this game. As you progress further into the game, the difficulty levels spruce up and so does the pleasure of the gaming. Enjoy!