To play this tower-defense game, first, choose your track based on your skill level and then choose the level of difficulty. Then you can set the use your mouse to select from various available defenses in the right-hand column. Once the defense is selected, choose the location on the track to place your weapon. Your weapons can be sold for cash and upgraded if needed. If the game is going to slow, you can head to the lower-right column to and hold the fast-forward button to speed things up. With every level, you’ll earn a new weapon. In the upper-right hand column, you’ll see the cash you’ve earned to see what you’re able to purchase. You’ll also see the hearts available which is the number of balloons that you can let pass you before you lose the game. Bloons Tower Defense 4 is waiting for you to defend us against bloons!