The MMORPG genre is one of the more hardcore. These are typically very big and long games that require a very large commitment from the player. This type of game is also often played together with others, and you can jump in and out in single and multiplayer. Games in this genre are titles like World of Warcraft, Guildwars, The Elder Scrolls Online.
MMORPG (Massive Multiplayer Online Role Playing Game) is the heavyweight of gaming. The games can typically be played for infinity or for a very long time. Most often you create your own Avatar that is to be developed through levels. The longer you get up in level, the stronger and more powerful you become. This takes a lot of time and requires enormous commitment, but you are also on the go and typically get close to your Avatar. In these huge adventures you can often go with others and help or solve various tasks together, which makes it possible to play in many different ways. This is also the type of game where you usually have to buy monthly subscriptions, timecards or game hours in order to play since the games can not be completed without investing a large amount of time in them.