Just spotted that the first beta of Reverie has been released over at Doomworld . Reverie is a new megawad designed to be completely compatible with vanilla Doom2.exe. It will feature 32 new levels in style of the 90's classics (Memento Mori 1 & 2, Requiem, Icarus: Alien Vanguard). It will hopefully avoid HOM, visplane overflows and savegame buffers, and will hopefully provide a good challenge, too. The only thing that's missing at the moment are the custom music tracks, but the artists are already at work. Until then you have some time to play through this and maybe even report some bugs and help valkiriforce with hunting them down and fixing them.