10 Sectors Part 2 (10SECTO2.WAD)

In 2000, Doomworld hosted a contest inspired by an Unreal community challenge. 10 Sectors took more than 120 submissions from authors looking to create the most interesting Doom II level they could using - you guessed it - no more than 10 sectors. The premise actually allows for fairly complex levels as demonstrated in the official 10SECTOR megaWAD. It collected the thirty highest-rated entries plus two special mentions. 10SECTO2 is then the first and only spillover release. 27 of these levels were part of the top 32 for at least one judge. The illustrious Linguica hand-picked the remaining five to round the collection out to the mythic "complete game replacement" status. Like the primary release, this 2000 PWAD should be played with Doom II in a Boom-compatible port.

DoomCenter E1 Mapping Contest (E1CONTEST.WAD)

Doom Center was an important fixture of the community during the post-source port boom. It was something of a media hub in its promotion of PWADs and their authors. It eventually deactivated with the death of its host but some of its staff went on to join Doomworld. Snapshots of the site were thankfully preserved via archive.org but most of its content and enthusiasm have not figured into its legacy. I only know of Doom Center's existence because it hosted a map-making contest during a week that celebrated the shareware episode in 2001. John Romero himself judged the submissions; the winner received an autographed copy of the Ultimate Doom.