The actual gameplay is pretty simple; click on a tower's icon at the bottom of the screen, and then click anywhere on the map that doesn't display as red to place it. Your tower will take a second to be built, and then voila! Instant death machine. You can control the speed of the gameplay with the pause, play, and fast-forward buttons in the upper right of the screen. Enemies will appear from the banner at the edge of the screen and march towards your castle, and it's your job to stop them from getting there. Towers will attack anything in range, so proper tower placement is a must... especially since on levels where there isn't a road, enemies will walk wherever they darn well please. Killing an enemy nets you gold which you'll use to spend on upgrading your existing towers, or building news ones. There are also several special structures you can build that, while not able to attack the enemy themselves, will enable you to use certain upgrades to better facilitate your dude skewering. After each stage, you'll be awarded sweet, sweet experience points based on how well you do, and when you earn enough to gain a level, you can spend it on new upgrades to apply to your towers in game.
