The challenge was to put together the best possible level that meets all 5 of the following criteria: 1. is Boom-compatible; and 2. uses only vanilla textures; and 3. is fun to play; and 4. looks OK; and 5. is constructed with 100 linedefs or less.
To put this last criteria in context, e1m1 has 486 linedefs.
Over 70 maps were submitted, and 64 were OK'd for release to idgames. These have been split into two wads:
100lineT: is levels that are more or less 'traditional' in their map design. They may feature special effects in their gameplay, but the focus is on providing the standard style of play, just in a very limited number of lines. 100lineN: is levels that tackle the 100 line limit either by delivering a slaughtermap, or through the use of an unusual (for Doom) style of gameplay. Many of the levels in this wad are considerably more difficult than any of the maps in 100lineT.wad
All maps were designed with pistol start in mind, though continuous play is of course possible. The order of maps in the wads was determined by the visual style of the levels; difficulty curve was not a factor. Some later maps will be easier than earlier ones. If a given map is too hard, too easy, or just not fun for you, feel free to IDCLEV out of there and try one of the others :)
/BEX Patch just for level names (also by Obsidian)