I love GTA 4.... It's not my favorite in the series, because, it kind of moved away from what GTA really is, in terms of gameplay and the fact that GTA is a satire of America across different time periods... It was more of a critic of the American Dream than a satire..... But, I thought the narrative was more focused than GTA 5, which had genius satire, but was not narratively as strong as GTA 4.... I also liked its somber, grim tone; it was something new in the series..... Not a huge fan of the vehicle mechanics though, at times they frustrated me...