Microsoft

 is an American software and hardware company. Microsoft's disk operating system (MS-DOS) was the original target for all Doom engine games, followed by Windows for Doom 3 engine games. Doom and Doom-engine games created for Microsoft platforms include:


 * MS-DOS:
 * Doom
 * Doom II
 * The Ultimate Doom
 * Heretic
 * Hexen
 * Strife


 * Windows 95 and later:
 * Doom
 * Hexen


 * Windows 2000/Windows XP and later:
 * Doom 3
 * Doom 3: Resurrection of Evil
 * Strife: Veteran Edition


 * Windows Vista and later:
 * Doom 3: BFG Edition


 * Xbox:
 * Doom 3
 * Doom 3: Resurrection of Evil, with Ultimate Doom and Doom II as bonus


 * Xbox 360:
 * Doom 3: BFG Edition, with Ultimate Doom and Doom II