Freedom Defense is an online, casual gamer-oriented, tower defense game. The main purpose of the game is to use resources to build defensive towers at various locations on the map in an effort to shoot down enemies of freedom before they reach you. Players start with 20 lives and 1000 resources, and each time an enemy of freedom reaches the final position, one life is deducted. Enemies of freedom gradually grow stronger and become worth more points, until finally a player has defeated all enemies, or has cut and run.