The Duke is back, and this time he wants to let us know he’s free of charge. This classic first person shooter had reviewers furious over its release into the Android Market. It drew intense criticism for debuting as one of the first paid apps to include ads. It only took them one day (and dozens of one star ratings) to realize the error of their ways and release an update to remove the ads. It would appear that wasn’t enough to appease users and garner excitement as they are now offering the game for free in the Android Market.