DOOM: eXoWAD

eXoWAD is a collection of levels and total conversions (TC) for DOOM, DOOM 2, Heretic. WAD files were the container file that contained information for games which used the DOOM engine. Custom WAD downloads were ubiquitous in the days of dial-up modems. There were also dozens of shovelware commercial attempts to sell WADs to users, such as the D!Zone collections.