What does MMO stand for in gaming?

Massively multiplayer online

MMO means massively multiplayer online, which refers to online multiplayer games where thousands of players can play at one time. Some MMO games include DC Universe Online, World of Tanks, and Call of Duty.

There are a variety of MMO genres, including action, flight simulation, exploration, FPS, social, and RTS. Some of the most popular MMO games are RPGs. These games are commonly referred to as MMORPGs.


I need to stop spending five hours a day playing MMO games
A gamer discussing MMOs on Reddit
A gamer discussing MMOs on Reddit

Related Slang


Updated November 4, 2022

MMO definition by

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