This isn't a good deal because you can pick up Watch_Dogs [Preowned] for £3.99 from Game. (https://www.game.co.uk/en/watch-dogs-209613) The season pass is only good if you really enjoyed the game, which not many people will/did.
After playing GTA5 I couldn't get on with either this or it's sequel. Maybe i'm spoilt but I value my spare time to highly and have too little of it these days...
Bought the solo game for £4 second hand a while ago and easily got my money's worth. The driving mechanics and protagonist are terrible, but the Ai, shooting, stealth and gadgets/traps are decent. I had the most fun on the drug-induced mini games.
This is bad but don't like how some games seems to be judged on graphics alone. This was a good game with the hacking elements the main highlight for me.
Worth a playthrough but it's nothing special, and the storyline/characters are mostly terrible.