Are you a fan of TD games for the iPhone? Sentinel Mars Defense from origin8 is a Tower of Defense game for the iPhone with amazing graphics of rendered environments, towers and enemies. In this game you can challenge your friends directly to beat your high score or compete with players worldwide with the online high score system.
As the commander of the dropship Sentinel, you must defend a distant colony from the alien hordes in this stunning new evolution of tower defense. Protect key structures which block the enemies’ path as the aliens smash their way towards your stronghold. Utilize an array of advanced technology including upgradeable towers and droids which can repair buildings or harvest resources.
Touch a built tower to upgrade or sell it. Drag the screen around to scroll the view and pinch to zoom.
Here is a video demo of Sentinel on the iPhone
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