First person shooter fans rejoice! It is the not-so-distant future, and we have been invaded by gun-wielding, blood-thirsty aliens. It is up to you, a lone gunman, to fight your way through 32 action-packed, explosive levels of mayhem and save the Earth! Do you have what it takes? Download to find out!Tech 1 includes the ability to replace the FreeDoom WAD file with other PrBoom compatible WAD files through iTunes file access. iTunes file access will also allow you to swap out the game's music, button configuration, interface images and save game files as well. This will allow you to also sync game details between your iPod Touch, iPhone, and iPad devices! Detailed instructions are available at the support link.Based on Doom Classic 2.1 Source and FreeDoom WAD file.