How to play or start wads

In order to play the mods or megawads, you need to have the full versions of DOOM2.WAD or DOOM.WAD. You need to have zdoom, zdaemon, or other source codes. Download the Wad you choose. When complete, open the folder with the wad inside. You will see a WAD file. Click and drag it into Zdoom and play DOOM2, Ultimate DOOM, or final DOOM.