Strategically place your army against waves of enemies. Shop for new weapons of destruction at your local War-Mart and upgrade them to deal maximum damage!
Command up to 3 defenders where there will be tons of enemy waves that will try to destroy your base. Equip a variety of weapons in which you can unlock and upgrade as you advance in the game.
Defend against the robo-bugs that are trying to take over your base. Unlock and upgrade new areas and special weapons. Collect enough exp points to get more powerful weapons.