Was so hyped for AC when this came out, I even read a couple books about the Nizari Ismailis.
And disappointed when AC1 came out. Especially because they managed to do the things that seemed hard/impossible at the time, the smooth freerunning, the large cities, the crowds, the graphics, etc., etc, but then they failed when it came to gameplay and design decisions (like having all those "glitches" which completely ruined the immersion). It could easily have been the greatest game ever if it had meaningful gameplay.