Commercial games

Doom 1

 * Doom
 * Ultimate Doom

Doom 2

 * Doom II: Hell On Earth
 * Master Levels for Doom II

Final Doom

 * The Plutonia Experiment
 * TNT: Evilution

Doom 3

 * Doom 3
 * Doom 3: Resurrection of Evil

Heretic

 * Heretic: Shadow of the Serpent Riders

Hexen

 * Hexen: Beyond Heretic
 * Hexen: Death Kings of the Dark Citadel

Strife

 * Strife - Quest for the Sigil

Other games

 * Amulets & Armor
 * Chex Quest