Here's a list of the best MMOs of all time. In this top you will find good MMOs of different genres: role-playing games, first- and third-person shooters, space strategies.
The term MMO (sometimes referred to as MMOG) stands for massively multiplayer online game. A distinctive feature of such games is that they work via the Internet and a large number of players.
MMO is a general term for massive online games, which can actually be of different genres. Among the most popular are MMORPGs and MMOFPS, but there are also massive online strategy games (MMORTS), as well as racing games (MMORG) and social games (MMOSG).
The most popular layer of online games is represented by various MMORPGs. In the Russian segment of the Internet, online role-playing games are often called MMORPGs, but this is more typical for conversational communication.
MMORPGs are usually divided according to the place of development and approach to game design into European and Korean. The most famous example of a European MMORPG is World of Warcraft, and a Korean one is Lineage 2.