Battle.net

Battle.net is an Internet-based online game, social networking service, digital distribution, and digital rights management platform developed by Blizzard Entertainment. The service was launched on December 31, 1996, followed a few days later with the release of Blizzard's action-role-playing video game Diablo on January 3, 1997. Battle.net was officially renamed to "Blizzard Battle.net" in August 2017, with the change being reverted in January 2021.

Battle.net was the first online gaming service incorporated directly into the games that make use of it, in contrast to the external interfaces used by the other online services at the time. This feature, along with ease of account creations and the absence of member fees, caused Battle.net to become popular among gamers and became a major selling point for Diablo and subsequent Blizzard games. Since the successful launch of Battle.net, many companies have created online game services mimicking Blizzard's service package and the user interface.

Blizzard Entertainment officially unveiled the revamped Battle.net 2.0 on March 20, 2009. It later revealed further details of the Battle.net revamped features at BlizzCon 2009 which supported World of Warcraft, StarCraft II, and Diablo III. The original Battle.net was then renamed to Battle.net Classic. Battle.net Classic games use a different account system to the games on Battle.net 2.0.

The platform currently supports storefront actions, social interactions, and matchmaking for all of Blizzard's modern PC games including Hearthstone, Heroes of the Storm, Overwatch, and StarCraft: Remastered, as well as various Call of Duty games, and Crash Bandicoot 4: It's About Time from corporate sibling of Blizzard Entertainment, Activision. The platform provides cross-game instant messaging and voice chat service.

In September 2017, Blizzard Entertainment released the Battle.net application for Android and iOS. The app includes the ability to chat with and add friends in addition to seeing what games they are currently playing.