Click the flag to start the game. Click the arrow on the top to purchase a tower. The purchasing will be successful if you have enough money to buy it. The basic tower is for urgent need and if you have enogh money then you can buy the double or the laser tower. The Laser tower is the best one. You cannot place a tower in the track. You can see the worth of a tower while buying it. If you take the mouse pointer over that tower you want to buy you will see its cost. Once you buy a tower you are money will be decreased. You can see the enemies coming from one end of the track to another end. They are in colors of orange, yellow and pink. The orange is the slowest, the yellow is the fastest and the pink is the strongest. In this game in wave 1 you will find the orange coming first and the more levels you play you will see each of enemies to come. After you have completely placed your towers you can play one wave. You can see in what wave you are by the wave number on the left top. Why you cannot play another wave when you are playing one. There are unlimited waves and old waves are possible. While starting the game you live is 20 if any enemies go out of the track without being shoot, your life will decrease by one.
