A computer game expansion pack
is a software package which expands, augments or enhances the original game
. The original game is usually required in order to use expansion packs. Sometimes expansion packs may contain nothing more than new game maps or scenarios or they may contain a great deal of new artwork or new features to the game.
An example of an expansion pack is The Sims Livin Large[?]. This expansion adds new objects, characters and features to the game. The original game, The Sims, is required for this expansion to install and operate.
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