doom 3 will never be supported.
So only doom (1) is supported?
Are doom 64 or doom II supported?
And if they are not, will they be?
Also I think the base WADs, like freedoom, doom, doom2, ect are just the games, and the add-on WADs are the custom maps that replace the existing maps, sprites/graphics, music ect. of that game. And I think you can select the game, then select the add-on you wan't to play (optional) and then start the game. I have never tried this but I think that is how it works. Please tell me if I am wrong, because I have the same questions he does.