MarkRoom (MARKROOM.WAD) is a single-level PWAD created by Mark Griswold. It is the first in a series of deathmatch maps which were popular in the early days of Doom modding. The map was originally released May 12, 1994. It appeared on Maximum Doom as MARKII.WAD, MARKROO2.WAD, E3M3 of RALPHNEW.WAD, MAP03 of DM2PAK#1.WAD, MAP03 of DTH2PCOM.WAD, MAP23 of PIMP.WAD, MAP19 of R.WAD, MAP19 of RALPHII.WAD, and MAP22 of WADPAK12.WAD.