OKMU is a MuOnline client that allows you to play on OKMU servers.
Much time has passed since the old Empire lost control over the Continent of MU. While the power of the central government continued to wane, feudal lords engrossed themselves in constant conflict over its control. Over time, these bloody feuds ravaged the land and destroyed the very foundations of its society. In this backdrop of strife--cultivated by mortal man's greed for power - a dark and ominous shadow fell over this once beautiful land.