Doom3D is a Win32/DirectX port of Id Software's DOOM. You will need a .wad file from either Doom(shareware, registered, ultimate, etc.), or Doom 2. You should be able to download the shareware version from somewhere, either Id's FTP site or one of the many mirrors.
Features
Sound and Music support
High resolution and windowed modes
Full TCP-IP Network support
PWAD levels, and sprites-in-a-PWAD
Hardware acceleration(requires Direct3D compatible 3D card)
Matrix support for full stereoscopic 3D! A Description of the matrix