After completing Assassin's Creed and for the most rather enjoying the game ( I got very pissy about the missing segments from the game that were later released as DLC and not particularly cheap DLC either ) I logged onto eBay and bought myself a second hand copy of the original game since I no longer wanted to directly support the franchise since I felt they had ripped me off with an incomplete game already.
As you'd expect the game play is much the same but I think I actually enjoyed the original game more than the sequel and from what I've seen of the third game nothing much has changed so I suppose if you enjoyed one Assassin's Creed you'll probably enjoy them all.
