my list is maybe a little odd, but I mostly played the games for the main mission and skipped almost every sidequest. I don't really know why I liked revelations so much. I think the pc port ran so smooth after a stuttering experience in 1-brotherhood. it had some features like automatically follow a person while they talk and the paths from main mission to main mission were rather short.
1. black flag
2. revelations
3. syndicate
4. assassin's creed 2
5. brotherhood
6. assassin's creed 3
7. unity
8. assassin's creed 1







