Doom95

Doom95 is an official source port of Doom to Win9x operating systems. This port was created by Microsoft to serve as a flagship for their DirectX technology, and was released on August 20, 1996. It supports four resolutions (320x200, 320x240, 640x400 and 640x480) and has a nice front end for playing multiplayer games and such. It supports a slightly higher visplane limit than the original Doom allowing for more complicated maps. Doom95 works with Doom, Ultimate Doom, Doom II and Final Doom. It also has cheat codes that are exclusive to it, such as the ability to kill all of the monsters in a level.