飞碟入侵！我们受到攻击，你是星司令部的唯一希望。我国人民的命运取决于你！ 炸掉所有的不明飞行物，弹药，盾牌和武器都可以升级。 Its a UFO Invasion! Were under attack and you are Star Commands only hope. The fate of our people depends on you! Blast all the UFOs in each Space Sectand scavenge their destroyed alien ships fammo, shields, and weapon upgrades in order to stay alive as long as you can. This Game is Completely FREE! There is no cost to play it and no ads (so you wont eat up your phones data-plan by playing it!). INVASION IS OPEN SOURCE! Invasion is an open-source XNA game fWindows Phone 7. The C# source code can be found at http://www.codeproject.com/KB/windows-phone-7/InvasionGameInXNA.aspx INVASION GAME HISTORY: The original 2002 Invasion game was written by Mauricio Ritter with DirectX 6 in C++ fWindows XP. It was ported to Managed DirectX in 2003 by Steve Maier. This 2011 Windows Phone version was ported to XNA by ImproviSoft LLC. Source code fall 3 versions can be found at www.codeproject.com! THE FUTURE: ImproviSoft intends to keep "Invasion fWindows Phone" free and open-source! We plan to add new features, such as saving game settings, saving the game, and high-scores in upcoming releases. We also would like to add higher resolution sprites. If you are a graphics designer and would like to contribute your time to this project, please contact us at Support@ImproviSoft.com. Thanks fplaying Invasion!