Overview System Requirements


It's a UFO Invasion! We're under attack and you are Star Command's only hope. The fate of our people depends on you! Blast all the UFOs in each Space Sector and scavenge their destroyed alien ships for ammo, 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 won't eat up your phone's data-plan by playing it!). Perfect game for Kids Corner! INVASION IS OPEN SOURCE! Invasion is an open-source XNA game for Windows Phone 7. The C# source code can be found at INVASION GAME HISTORY: The original 2002 Invasion game was written by Mauricio Ritter with DirectX 6 in C++ for Windows 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 for all 3 versions can be found at! THE FUTURE: ImproviSoft intends to keep "Invasion for Windows 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 Thanks for playing Invasion! Release Notes: Version 1.1.1: * This is the 1st version built with Visual Studio 2012 * Fixes Accelerometer Input Bug in LandscapeRight Orientation Version 1.1.2: * Check for Internet Connection before asking to Rate & Review


Additional information

Published by

ImproviSoft LLC

Developed by

ImproviSoft LLC

Release date


Approximate size

3.41 MB

Age rating

For all ages




Get this app while signed in to your Microsoft account and install on up to ten Windows 10 devices.

Language supported

English (United States)

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