ZDoom Community Map Project II

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.