Getting 100% Completion in Grand Theft Auto IV. IGN Strategize presents GTA 4 100% Complete. Helps you get 100% Completion. IGN - Grand Theft Auto IV Hardest Stunt Jump . Grand Theft Auto IV (abbreviated to GTA IV and GTA 4) is a sandbox-style action-adventure video game developed by Rockstar North. It is the ninth title in the Grand Theft Auto series and the first in its fourth generation. Grand Theft Auto IV was released worldwide (except in Japan) on 29 April 2008 for both PlayStation 3 and Xbox 360. Two episodic packs will be released exclusively for the Xbox 360, the first of which has been delayed until the first quarter of Take-Two's 2009 financial year. The game is set in a redesigned rendition of Liberty City, a fictional city based heavily on modern day New York City. It follows Niko Bellic, a war veteran from Eastern Europe, who comes to the United States in search of the American Dream, only to find his cousin has lied about the wealth that was promised to be awaiting...