Got every GTA game, so no.5 is a must have
Gta 4 wasn't great in terms of single-player, but the multi-player was a blast... some of the most fun times I've ever had online.
Nothing like waiting for your teammates to get in the **** car and then speeding off too soon and seeing one of them hang on the car door, scraping their legs over the road.
Or riding shotgun with a terrible driver that hits every single wall there is to hit... only to see everyone jumping out and throwing grenades at him.
Playing racing matches with super slow scooters + SMG's = mayhem.