I'm enjoying Watch_Dogs thoroughly and more than most other similar open world games
I think Watch_Dogs is great, mechanically, audibly and visually \[]^__^]/
I've played the Xbox 360 version, PlayStation 4 and of course the Windows OS version and it's a different game on all. The Xbox 360 version is lowest of course, but still fun to play, just looks a graphical bland mess and slow. The PlayStation 4 version is great, but again slow and mechanically rubbish. I use a DirectX 11 capable system with (uncompromising) 8Ch audio out, in Stereo 3D (1920 x2) and it's an outstanding game (best home 3D I've seen without the Oculus Rift).
To enable maximum graphical quality, you need 3Gb's of VRAM for Anti-Aliasing and 2Gb's of VRAM for Ultra textures, plus at least 8Gb's of RAM to have run smoothly and fast enough. My Nvidia 680 is limited to 4Gb's of VRAM, but using TXAA (around 2Gb's of VRAM) helps maximise it where it needs it and allows for Ultra textures too.
The mini games are a lot of fun too (thankfully part of the game and not overpriced DLC's) and the in-game music is a lot better than we'd all originally heard in the millions of videos before it.
My minor issues would be: the draw distance could be pushed a little more, the majority of female NPC's move femininely, they don't look exactly look it and keymaps can be configured, but not as much as I like (a couple of double usage keys gets me confused at times).
What is disgusting and broken ...as 'always' ...UBisoft's awful 'Uplay'. Each time you play, it's a flip of the coin on whether you will connect of not and be able to play with others (actually in-game or ctOS mobile app).
Uplay either needs to be fixed ASAP (days, not weeks, months or years) or like GfWL (Games for Windows Live) and the equally rubbish, 'RockStars Social Club' ...'hacked out' and forgotten []^__^]