---Click and hold on the black squares, coming to destroy your base, then drop them to their death.--- There are 15 waves that get harder as you go on. _____Click on the desired upgrade or skill to purchase._____ -------WALL ^ cost 500 dollars for level 2, and 1500 for level 3------- -------REPAIR cost 50 dollars to restore 1 health to your wall.------- __________The ARROW RAIN cost 500$ and gets 250$ more expensive every time you use it___________
