Toy Defense 4: Sci-Fi

Defend the universe from alien invaders! Red Alert! The robots are invading, and only you can stop them from taking over the universe! Experience the ultimate space battle in the tower defense hit "Toy Defense 4: Sci-Fi"! Repel waves of robots and enemy spacecraft, recruit fearless soldiers, fortify your defenses, and supply your troops with the best weapons. The future of the universe is in your hands! Put your skills to the test and save the galactic empire from invaders in this epic tower defense action game!