Games Like Operation Valderon

You have been personally selected by the emperor to command the finest fleet in Valderon against the incoming enemy forces. Your job is to position the fleet so NO enemy forces pass through. Glory to Valderon. Operation Valderon offers a unique twist to the classic tower defense structure, with unique towers and versatile enemies which make for an addicting gameplay. Select your fleet and place them strategically onto one of the 400 possible spots, and save the greatest planet in the universe from the exponentially growing enemies.