It's time to put your farming hat on and get those sheep to the market. Yep, ur a farmer in this game and your objective is to direct the sheep to the exit. Beware, you happen to have a high voltage electric fence. The voltage is so high your sheep can be vaporised if they touch it. So when herding, make sure they don't wander off in the direction of any fence... unless you like see vaporised sheep...
The number of sheep you have to herd increases in later levels, as do the challenges you face getting them safely to the exit. Are you up to being a farmer? If not, you can always get a friend to play with you on the same computer and help you with your herding. Alternatively, you can play with the same person competitively. The choice is yours.
Look after your sheep. Keep them alive. Get them out safely!!