The surface is being approached by the mechanical invaders, and they're stronger than ever. Iron Heart 2: Underground Army is the long-awaited sequel to our popular tower defense game! The ferocious resistance is gaining impetus. The steam robots are just about to break through our defenses and have swarmed into underground tunnels. Only your tactical talents can put a stop to their iron military!
Each amount is a foray into the depths of the planet in search of the mythical Iron Heart, effective at destroying the invaders forever. But the road to victory is anything but simple! Spider mines steel hounds and electrical scorpions – these are just a couple of the dangers hanging over humankind!
Fight on the streets of an underground paradise and in the halls of the Iron Heart. Will humanity be banished forever, or victorious? It all depends on you!