This… somethingth… entry in the Assassin’s Creed franchise incorporates quite a number of elements from Witcher 3: The choices (though less significant here than there), the scattered and numerous love interests (again, not as significant here), the occasional ‘investigation’ mechanics, and the open world you can explore as you wish.
There’s also bit of Dragon Age: Inquisition there in the form of repeatable/infinite bounty board tasks, which can thankfully be completely ignored.
While the main questlines aren’t all that exceptionally long, there are a number of optional character-building sidequest chains available and exploring/clearing the whole map will take quite a bit of time (and require playing the game as a schizophrenic asshole). In the neighborhood of 100+ hours. And is it worth it? Well that depends on your playstyle. If you go into it like the aforementioned Witcher 3 then it’s probably going to end up a disappointing, repetitive slog. Go all-in on assassination and/or hunter damage though and you can end up literally running through 4+ enemies at a time (Rush Assassination is a godly ability) while Ghost Arrow lets you pick off individual targets in complete safety.
Fun for those who like playing characters that feel like gods. Not so much for serious roleplayers or completionists. Prudes may also wish to stay away, as ~40% of the statuary is nude and this is a game focused on climbing things in a location where pants don’t exist; expect to be flashed. Often.