Ah GTAIV, I have such fond memories of the game both singleplayer and multiplayer are stellar....but they don't work. (Bear in mind this is only not recommended because of Windows Live)
Here's the gist of it, Windows Live is a terrible, terrible software that has broken this game. It'll allow you to log in once or twice and then it won't allow you to log in ever again. You may be thinking, 'But Breaking Breakfast! No Windows Live log in is fine, I can just play singleplayer!' What a ♥♥♥♥ing joke. Go nuts buddy play the singleplayer but you'll never be able to save it because Windows Live stops you from saving, who on gods green earth decided Windows Live was a good idea?!
So in TL;DR form don't buy the game because Windows Live wont let you play.
Truly unfortunate considering the pros of this game:
- Great cast of characters
- Hilarious, dark and crime-ridden story
- Missions are great fun
- Multiplayer is so much fun with friends
- Mods are plentiful
- Heaps to do and explore
Just a really good game ruined by a really bad software.
(Also for those curious about how I still have an 18 hour playtime despite Windows Live problems, I played played the game solidly for 7 hours and then realized the GFWL problem and played the game for another 6 hours and left it running for the remained before I realized how ridiculous the problem was.)