Assassin's Creed is an enriching, immersive and satisfying game in regards to its atmosphere and gameplay, save a few glitches and flaws. Yet, its conventional and simplistic ending virtually strips the game of the philosophical credibility that it had attempted to establish beforehand. In addition, the many goals in this game grow incredibly repetitious as the player progresses through the game's narrative.
Regardless of this, Assassin's Creed perfects its open-world atmosphere through its detailed and complex depiction of the crusades. In addition, it poses many fascinating philosophical and moral questions that resist easy answers, even if Altair's strong, and arguably simplistic, adherence to the creed does undermine the player's ability to challenge themselves on an intellectual level. It's the moral absolutism of Altair that the game attempts to eschew.
Occasionally, some of the dialogue is stilted and the delivery isn't quite credible as one would hope, yet its ambition and scope seem to transcend its flaws. Assassin's Creed isn't an infallible game by any means, but it certainly isn't a mediocre cash cow.