Magic: The Gathering Online

Magic: The Gathering Online (MTGO) or Magic Online is a direct video game adaptation of Magic: The Gathering, utilizing the concept of a virtual economy in order to preserve the collectible aspect of the card game. It is played through an Internet service operated by Wizards of the Coast, which went "live" on 24 June 2002. Users can play the game or trade cards with other users. It is only officially available for the Microsoft Windows operating system.

As of February 2007, Magic Online has over 300,000 registered accounts; however this does not represent the true number of players, since people are allowed to register multiple accounts. At different times during the day and night, Magic Online hosts on average 2,000-4,000 simultaneously logged in accounts. According to Wizards of the Coast, Magic Online is "somewhere between 30% to 50% of the total Magic business."