Rockstar North. (2008). Grand Theft Auto IV [Video game]. Rockstar Games.

Grand Theft Auto IV is an action-adventure game developed by Rockstar North and published by Rockstar Games in 2008. Set in the fictional Liberty City, modeled after New York City, the game follows Niko Bellic, an Eastern European war veteran seeking a fresh start in America. However, Niko's past and ties to the criminal underworld soon entangle him in a series of conflicts and morally complex choices.

The game features an open-world environment that players can explore freely, including driving vehicles, engaging in combat, and interacting with NPCs. Liberty City consists of four main boroughs and offers a dynamic, immersive urban experience, complete with detailed graphics and a realistic simulation of city life. Players can undertake main story missions to advance the narrative or explore side missions and activities like dating, bowling, and vigilante work.

Gameplay mechanics are centered around third-person shooting, melee combat, and driving. The cover system, a new addition to the series, allows players to strategically engage enemies while protecting themselves. The game also introduces a mobile phone system, enabling players to arrange meetings, access missions, and call contacts for support.

A notable feature is the moral decision-making system, where players face choices that influence character relationships and mission outcomes. Multiplayer modes further expand the experience, supporting up to 32 players in competitive and cooperative scenarios, including races, team-based battles, and free-roam modes.

Critically acclaimed, Grand Theft Auto IV was praised for its narrative depth, voice acting, and attention to detail, though it faced criticism for technical issues and controversial content. It remains a landmark in gaming history for its blend of storytelling and open-world gameplay innovation.