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Acronym : Massively Multiplayer Online Game
Man, i so totally roXORd all those fools in that MMOG
by fuglett June 16, 2003
Massively Multiplayer Online Game. A game in which people usually pay a monthly fee to game in an online universe.
My character pwns all the n00bs in City of Heros.

Ultima Online is dead.
by Ramsey September 18, 2004