Commercial games

Doom 1

 * Doom
 * Ultimate Doom

Doom 2

 * Doom 2: Hell On Earth

Final Doom

 * The Plutonia Experiment
 * TNT: Evilution

Doom 3

 * Doom 3

Heretic

 * Heretic: Shadow of the Serpent Riders

Hexen

 * Hexen
 * Hexen 2

Strife

 * Strife

Other games

 * Chex Quest

Fan made

 * FreeDoom