Watch_Dogs is pretty damned underrated.
The city's far more interesting than anything provided by GTA, the hacking's great fun, and though the driving controls had a learning curve, they weren't difficult to master. Seriously, those driving controls are tight. They're built perfectly for dense environments and narrow streets, and my mastery of them did make the multiplayer fun :p
The multiplayer! It's just the best! Online invasions provided some of the most fun MP I've seen--you sneak into someone else's game, disguised as an NPC, and hack the hell out of them (as opposed to regular hacks?). The more often you hack others, the more often you'll be targeted--and only one player has successfully hacked me, after 32 hours 8-)
But one of the things I love most about Watch_Dogs isn't the thrills it can provide, but the chill. I've spent hours strolling through the city, admiring the sights. If I'm not walking, I'm going for a relaxing ride on the train system.
Fucking love those trains.