Silhouettes of Phobos

Silhouettes of Phobos is a PWAD for The Ultimate Doom created by 	Michael Lundy and released in November 1995. It consists of four spacious levels, the first three replacing the respective maps from Knee-Deep in the Dead, and the last bonus map taking up the E4M1 slot.

Levels

 * E1M1
 * E1M2
 * E1M3
 * E4M1

Soundtrack

 * E1M1: "Sinister" by Bobby Prince
 * E1M2: "The End of DOOM" by Bobby Prince
 * E1M3: "Demons On The Prey" by Bobby Prince
 * E4M1: no change