For those of you who missed out on purchasing iDOS when it was released on the iTunes App Store last October, and then quickly taken down, guess what? You’ve been given a second chance to download it. For some strange reason, Apple has allowed the MS DOS emulator back onto the App Store as a free app (we’re not complaining) but it has been simplified and it now comes with a bunch of games including Duke Nukem and Wolfenstein 3D. If you want to add your own DOS programs, you have to find a way to move the files into Apps\iDos\Documents on your iOS device. Head over to the iTunes App Store to grab iDOS for free. Then dig up your favorite classic DOS games to relive your past on your iOS device.