Positech has recently released their first expansion pack for their "alternate-history tower-defense game", Gratuitous Tank Battles. The expansion, titled The Western Front, takes place in the era of World War 2 pitting American armies against the Germans in the heart of Europe. Gratuitous Tank Battles: The Western Front includes eight new missions in a new single-player campaign and sixteen new tank hulls, including the Tiger, Sherman, and Pershing, that can also be used in the basic game. The expansino is available from the developer for $5.99 and will be released on Steam shortly. For more info head over to www.gratuitoustankbattles.com/dlc.