You will confront waves of relentless enemies. Build and fortify defensive towers: gatling gun, elemental fire thrower, bomber, tesla robot and generator. Game Features - More than 40 free card game wars levels to challenge your strategy - 5 upgradeable towers - Customizable steampunk robot - 2 upgradeable heroes - Fantastic eye-catching art design Resistance and their giant steampunk machine The Defender have to protect their world again!