1 Monster (1MONSTER.WAD)

We are more awash in limitation-based projects than ever, with 10 Sectors capturing the imagination of the community. When 1 Monster was conceived, Dr. Zin had 2 Sectors and Congestion 1024 in mind, though we've since seen 100 Lines and a whole host of resource-economy projects. What you don't see a lot of, though, are restrictions on enemy variety. Enter 1 Monster, a megaWAD where only one monster type is placed on each map. Every member of Doom II's bestiary is represented here, from the lowly zombiman to John Romero himself with his luscious locks of love. The project kicked off at the tail end of 2005 and then changed leads several times before seeing a final release in 2007. In its more or less final form, 1 Monster is a 25 map replacement for Doom II, to be played in Boom-compatible ports.

One-Week Megawad (ONEWEEK.WAD)

Sam Woodman was bitten by the bug. Inspired by the Quake community, Doomworld was hosting Speedmapping Sessions on a weekly basis. Another site, Doom Center, kicked off a week in tribute to Knee Deep in the Dead. The intrigue was amplified with a contest where authors had a fortnight to craft an E1-themed level, to be judged by John Romero. Metabolist ultimately settled on hosting ten consecutive invitationals. The turnout was... less than spectacular as far as numbers go. He received an average of 1.5 submissions per event. The eleven that Sam did not reject were collected and compiled into the One-Week MegaWAD. Released in 2001, this Doom II episode is generally limit-removing but ought to be played in a Boom-compatible port due to MAP10 at the very least.

THT: Threnody (THTTHREN.WAD)

You don't maintain the /idgames archives for eighteen years, marshal the Doom community's longest-lived and most productive authorship collective, and found what became the de-facto standard for "advanced" source port features without getting some kind of a send-off. While we were fortunate enough to pass him the Espi award in 2014 it wasn't until he died in 2015 that community members attempted to pay their respects in a more familiar format. The end result of the Ty Halderman Tribute Project: Threnody, a 20-level megaWAD for Boom released in 2016.