Sentinel 3: Homeworld is a sci-fi tower defense game for the iPhone, iPod Touch and iPad. This game features 20 levels across with 14 distinctive maps. The game also has a new powerful commander unit and over 20 unlockable orbital ship weapons, abilities, turrets and automated drones.

Players’ can set their high scores on endless modes available for all maps online.

Here are Sentinel 3: Homeworld screenshots: