It was an okay game, but quite disappointing for a few reasons. The best way to put it would be that when Brotherhood was released, everyone was surprised by how meaty the single-player component was; with a ton of side content, neat features (Brotherhood systems, Da Vinci machines, Borgia Towers), a large city area to explore, new symbol puzzles, and a packed main storyline that swiftly continued Ezio's story and gave many minor characters from II more time in the spotlight. Revelations, on the other hand, was the kind of content-lite iterative release that everyone was expecting Brotherhood to be, with a noticeable reduction in side content (e.g. Only one side-mission for each faction), gimmicky features that didn't make it out of this one (that bad Tower Defense mini-game, the boring Desmond puzzle-platformer), and a plot that played it too safe. On that last point, essentially, they threw out the cast built up over two games and replaced them with characters that are hardly developed (and the villains are a noticeable downgrade from the Borgias). 16 was the biggest disappointment, as they really don't do that much with him in the main game, after three games of build-up.
But, like I said at the beginning, it's still an okay game. The bombs were fun to use (though admittedly quite broken), the setpieces to obtain the Masyaf keys were fun enough, the Altair sequences probably had a better story arc than the Ezio plot, Istanbul was a nice city to climb around in, and the character designs were pleasantly colorful and detailed,
