ZPack: Random Maps for ZDoom

ZPack - Random Maps for ZDoom is a 2008 megawad by members of the ZDoom community which contains 30 levels, divided into three 10 map episodes. It requires ZDoom 2.2.0 or later to play (or alternatively, GZDoom 1.1.0 or later). Although the maps are divided into episodes and use the ExMx lump name scheme, the wad is for the Doom II IWAD.