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GOG Galaxy is a digital platform created by CD Projekt, designed for use with games purchased through GOG.com, although not every game is able to be downloaded and installed using the client. Some games have updates supported, while some do not. Depending on the title, players can select individual versions to install.
One of the unique selling points of the client is being able to support multi-player for older games, such as with Aliens versus Predator Classic 2000.