You can now click on the enemies to damage them. To place a tower, click on its icon in the top left, and then click where you want to place it. A few towers may also point a direction by clicking where you want it to point to after placing it. Version 1: Added music. Version 2: Decreased Banks selling price, possibly fixed a glitch where buying multiple buildings at once Version 2.5: Added sound effects. Version 3: Added fourth upgrade for Normal, Ring, and Bomb towers!
Credit to everyone.