Anarchy Online (AO) is a science fiction themed massive multiplayer online roleplaying game (MMORPG) set almost 30,000 years into the future, in an age where common surgical implants and microscopic nano-bots can relieve most forms of human suffering or transform any normal being into a weapon of destructive force.

On the planet of Rubi-Ka, a battle rages between the haves and have-nots in a time when the clans seek liberation from the all-powerful Omni-Tek corporation in the name of justice, voluntarily if possible; from the barrel of a gun if necessary. The leaders of both sides are desperately seeking a solution that can stop the violence ravaging the planet, against a backdrop of betrayal, military raids and conniving political games, cyborg assassins and modified humans.