DA:O is quintessential Bioware. Aside for the graphics -which were rough imho even during the inital time of release(and the reason for not giving it 5/5 star rating), is just some of the best RPG story telling there is. The character class origin story that is unique to the class and race the player selects really gets one involved and "bought in" to the over arching story/plot. Worthy of replayability many times over. Hands down, a must have game for any CRPG fan.
