Microsoft Plus! was a commercial operating system enhancement product by Microsoft. The last edition is the Plus! SuperPack, which includes an assortment of screensavers, themes, and games, as well as multimedia applications. The Microsoft Plus! product was first announced on January 31, 1994 under the internal codename "Frosting."
The enhancements that make up Microsoft Plus! are typically developed by Microsoft itself. The Plus! packs also include games and content from third-party companies, for example, in Plus! for Windows XP, the HyperBowl game developed by Hyper Entertainment Inc. was included. Plus! features that actually enhance the base operating system or provide utility are generally included for free in the next release of Windows.
Microsoft Plus! was discontinued in favor of Windows Ultimate Extras in Windows Vista.