Steam

Steam ([stiːm], from English - "steam") is an online digital distribution service for computer games and programs developed and maintained by Valve. Steam serves as a technical copyright protection tool, a multiplayer gaming and streaming platform, and a social network for gamers. The Steam software client also provides installation and regular updates of games, cloud save games, text and voice communication between players. 

Hostory

Steam replaced the WON (World Opponent Network) system, which was a more highly specialized service and was not a data distribution system over the Internet (digital distribution). Steam's history began in 1999 and is linked to the success of Team Fortress Classic (TFC) and Counter-Strike (CS). Even before the release of their final versions, they have become one of the most popular multiplayer games. At that time, their popularity reached no more than 2-3 thousand active players. A few years later, the number of TFC and CS players has increased several times. As a result, Valve has begun to overhaul the traditional methods of organizing online games. It was necessary to solve problems for further growth in the number of players. Anytime, anywhere, you can buy or install a free licensed game fromhttps://store.steampowered.com/ and play with friends!

Additional features

Steam Cloud - This feature allows you to save game data (such as personal configurations, keyboard and mouse settings, logo sprays for multiplayer games, save files) on Valve's servers[49].
Steam also allows owners of Internet clubs to conclude an agreement on the use of the CyberCafe system, which allows you to use a significant part of Steam games[50] for a certain monthly subscription fee.