Think you saved humanity...? Not so fast! On the eve of your glorious campaign to retake the galaxy, a new threat emerges. Fight the Creeper in a new environment while you excavate and build your industry of war.
Use the tower's new and unbelievably cool Super Activated Abilities to lay waste to the endless swarms of balloons. You'll need all the firepower you can get to combat the new Balloon types and new tracks with moving parts and tunnels.
Save your nation from destruction by completing a series of defense missions. Strategically build towers to eliminate waves of enemy soldiers before they destroy your castle. As you progress, new towers become available for you to build.
