Just for interest sake:
For those who wonder what the big deal is about Doom: there is probably no other game that generated more interest from amateur coders than Doom. There has never been a period quite like the year (1994) after Doom was released. At that time, there was almost ravenous interest in checking out the new Pwads (levels created by Doom hobbyists) that appeared almost every day and peaked during what has been called (by me :)) the 'great Doom summer of 1994'.
There was no internet quite like there is now. Most Doom-related discussions were on forums on Compuserve which was most popular at the time (AOL was very much in 2nd place!) and access speed was at a blistering 14.4 or 28.8 rate. Heated discussions occurred over who were the greatest Wad-authors eg. John Anderson (Dr. Sleep), Leo Lim, or Chris Polan etc) and what made a great Wad. Every once in a while even Romero himself would get involved in the discussion. The end result is that there are literally thousands of Wads to play once you have a good Doom port running. Nothing like that occurred with any other of the Id games, (including Quake).
