By gaining experience and spending skill points, you can unlock unique abilities, turning your basic fortifications into an impenetrable wall to defeat massive bosses and save the kingdom. Master of Defense - Big Fish Games
: A harsh, sun-scorched landscape that introduces new, high-intensity waves.
: A shift into icy, underground caverns where your defenses are tested by cold-themed threats.
: Heavy artillery that grows in size and power to crush land-based enemies.
As the commander, you utilize gold earned from defeated enemies to build and upgrade a variety of specialized towers: