I love this game! It is definately the best in the series!
User Rating: 10 | Grand Theft Auto IV X360
This game has got everything; blood, violence and some of the classic GTA humour. In the previous GTA games I didn't really like doing the missions except in San Andreas but some weren't enjoyable. However in GTA IV I love the missions and storylines that I would be happy to complete the game over and over again. The gameplay is so realistic but I think the best thing about the gameplay is the cover system it has saved my ass many times. I also like the new wanted level system; it keeps the fun in the game and it makes outrunning the cops so much easier. The main thing I noticed when I first played it was the graphics; compare screenshots of San Andreas to GTA IV it is a big improvement but my favourite thing about the enhanced graphics is the explosions they are wicked. I highly recommend you play this game but once you play it you don't want to stop! 
