doom_shareware_data (game data from the shareware Doom release) Game data from the shareware release of Doom (doom1.wad, v1.9). Includes only the first episode of the game. You'll need a Doom engine to use this. Currently slackbuilds.org offers zdoom, prboom, prboom-plus, odamex, chocolate-doom, skulltag, and probably a few more.