3D floor

3D floors or extra floors are an editing feature supported by some Doom source ports which allows the designer to make free-standing or room-over-room platforms.

An alternative way to doing 3D architecture in Doom is by using portals.

Ports with 3D floors

 * CDoom
 * Doom Legacy
 * EDGE
 * GZDoom (Only visible in OpenGL rendering mode)
 * ReMooD
 * Risen3D
 * Skulltag (Only visible in non competitive modes in OpenGL rendering mode)
 * Vavoom
 * ZDoom (Development versions only)