Gameloft has put Modern Combat 3: Fallen Nation
on sale for $.99 in the Android Marketplace. You should have until about noon on January 3rd to pick it up at this price, but I wouldn't wait if you were thinking about picking up this title anyways.
Note: This game isn't compatible with all Android devices. And I've found out (sadly) that it hasn't been cleared to work with my new Asus Transformer Prime?!?! Hopefully you have better luck. Happy sniping!