Version

A version in regard to Doom and its offshoots is a particular release or variation of a game, program, or modification, namely:


 * An commercial adaptation of the games to a particular system or environment.
 * A specific development or release version of the PC version of Doom.
 * A specific release version of the PC version of Doom II: Hell on Earth.
 * A specific build of the engine used for the PC versions of the games.
 * A port or modification of the engine based on the released Doom source code.