I have been laid down in a pit of darknesses and the shadow of death. And thy anger has pressed down upon me; and all thy cares have come down upon me. And from this bed I cry out for the kindling of thy Light!
Outbreak might be best summed up as an add-on to the original SMOD that encourages the same frenzied action as it throws a generous number of hostiles at the player, especially zombies. Following its base, Outbreak's arsenal includes usual suspects like the G36 carbine, as well as less conventional ones such as a katana that gives the player a speed boost.
Outbreak started off in Summer 2007 as a small, personal mod by SMOD: Tactical forum member veteran_gamer. His hobby project was later released and was well received. As time went on, others like Useful, Jen4, and IneptGuard contributed work and ideas as well.
ZDoom Community Map Project: Take II, abbreviated to ZDCMP2, is a single map for ZDoom designed by a large number of mappers. It is one of the largest levels ever made. Like the previous project, each mapper was assigned a set of dates to work on the map, each one continuing where the last mapper finished. It took over two years to build, with a final release on 25 May 2014. The map makes extensive use of ZDoom features, such as 3D floors (including swimmable water), and portals.
Originally 'The Nullspace', was a map submitted for Quake Brutalist Jam 2 by ExaByt. This is an expansion of it into a mini-episode consisting of 4 maps (including the original Nullspace, slightly updated/rebalanced), and a start map.
Earthless is a complete 32-level megawad by James Paddock (Jimmy), with skies and sprites made by Fuzzball and a guest map by Jark. It is the spiritual successor to Deathless.
The project from iddqd.ru the community, basis of which are maps, made in a speed- mapping course, on which only 4 hours were allowed (each speedmapping contest - 4 hours length). Of the 33 maps in this megawad, all but 14 were part of these speedmapping contests.
This is a five map hub for Zdoom (recommend playing in GZDOOM). The Gameplay is largely arena based with some hard fights thrown in to try and challenge players.
Realm of Shades is a episode replacement PWAD for Doom II created by Pedro Francisco Puicón (NokturnuS). It is NokturnuS' first public release, and is an episode containing seven levels utilizing some custom textures.