Alien Invasion TD app for iPhone and iPad

Join over the 5 millions players in the Alien Invasion TD and fight off hordes of monsters created from a mysterious cataclysm event!
Defenders: TD origins merges classic tower defense gameplay with collectible card mechanic.
Your towers, spells and traps - all are the magic cards. Collect them, fuse them and get them even more powerful! Freeze, burn, poison, explode and slash countless enemies with unique Magic and Tower collection!
Choose your cards carefully, play them strategically and expect heavy resistance along the way - from small and harmless mutated fungi to powerful giant goblins and dragons!
Enhance your hero spells and skills, be strategic and try Heroic Mode to become the greatest Defender.