Wolfenstein 3D is available to buy at the following locations:
- Wolfenstein 3D on Steam
- Spear of Destiny on Steam
- Wolfenstein 3D and Spear of Destiny on GOG
- Wolfenstein 3D on 3DRealms
Shareware versions of the games can be obtained:
- Legacy Wolf3D page on 3DRealms – some great links and other downloads on here!