Best Semi-mmo game I've ever played and I've played many. No other game has the character building depth that DDO has. They also add content in relatively short intervals. The Architecture of this game is loosely based on AD&D 3.5 rules set with later versions of AD&D components added through time and also modifications to game mechanics to support a higher than lvl 20 game. Not your usual online role-playing game but worth investing time into it.