Steam

Steam is a multi-player platform developed by Valve Corporation. It is used to distribute games and related media online.Steam provides the user with installation and automatic management of software across multiple computers, community features such as friends lists and groups and in-game voice and chat functionality. Steam was initially developed for Microsoft Windows, they have now expanded to include a Mac OS X version and Linux, and limited functionality on the PlayStation 3 and for both iOS and Android mobile devices. In addition to being a central hub for gaming software,they have created a version of Steam with altered functionality to be used in schools for educational software. There are many single player games also available in the Steam store.