Haven't played the games, but I had a vague idea of what to expect. Went and saw it with a few friends who've played them all, and they were disappointed with it overall - had a few neat touches but overall not that great, was the general gist of their reactions.
I just sorta sat there with a

look on my face the entire time. The narrative really started to nosedive towards the end and the ending itself was a bit
Also, note to casting directors: do not ask Sean Bean to do an American accent, EVER. Nothing against Sean

but his Yorkshire-ness is just too strong.