During the 1990s, online games started to move from a wide variety of LAN protocols (such as IPX) and onto the Internet using the TCP/IP protocol.Doom popularized the concept of deathmatch, where multiple players battle each other head-to-head, as a new form of online game.Browser-based pet games are popular amongst the younger generation of online gamers.These games range from gigantic games with millions of users, such as Neopets, to smaller and more community-based pet games.
These games, also known by their related technology as "Flash games" or "Java games", became increasingly popular.
Popular RTS games with online communities have included Age of Empires, Sins of a Solar Empire, Star Craft and Warhammer 40,000: Dawn of War.
A specific subgenre of strategy video games referred to as multiplayer online battle arena (MOBA) gained popularity in the 2010s as a form of electronic sports, encompassing games such as the Defense of the Ancients mod for Warcraft III, its Valve-developed sequel Dota 2, League of Legends, Heroes of the Storm, Smite, and Mobile Legends.
Many online games create their own online communities, while other games, especially social games, integrate the players' existing real-life communities.
It has been argued that, since the players of an online game are strangers to each other and have limited communication, the individual player's experience in an online game is not essentially different from playing with artificial intelligence players.