GTA IV is ready to continue the trend and challenge HALO3's sales.

Industry analysts estimate that the first-week sales volume of Grand Theft Auto IV (GTA4) will reach 5 million copies. Compared with the first-week $300 million sales record set by Halo 3 last year, it may be difficult for GTA4 to surpass this figure in the first week, but it is certain that its annual sales volume will exceed that of Halo 3.