>>723622870
Most of them are worth revisiting if you're emulating them for free anyway
AC4 is good. AC4Answer is the best in the series but with the hard condition of you need to like super fast paced combat
The worst game in the series is V you can skip that shit without missing anything
For everything from AC1, AC2, AC3 and their respective subtitle games you can go with the general rule that the older they are the slower and clunkier they get, but even then they're worth trying as a curiosity if nothing else. I'd say pick one of the numbered titles first and if you enjoy its gameplay style you try the associated subtitle games next