GTA4 was released worldwide in April 2008 for Xbox 360 and PS3. The target audience was between 20-30 years old due to the adult content. It sold over 6 million units in its first week and over 17 million copies total, breaking industry records. Players control Niko Bellic, an immigrant who moves to Liberty City to start over but finds it similar to his homeland. Key features include driving, shooting, using a cell phone, and a wanted level for crimes. Extra episodes like "The Ballad of Gay Tony" and "Lost and Damned" were released offering additional missions. The game promoted synergy through its online multiplayer and coordinated magazine and trailer releases.