Bethesda and id have updated both Wolfenstein 3D Platinum and Doom Classic for iOS, with a host of changes for the better, but they've also released the 2.1 Source Code for both for all you dev-types ...

id Software has released the source code of Splash Damage's Wolfenstein: Enemy Territory and Grey Matter's Return to Castle Wolfenstein as part of its QuakeCon festivities, letting everyone tinker ...