Modern Combat 4: Zero Hour is an action-packed first-person shooter designed for iPhone users, delivering an immersive gaming experience. Players are thrust into a gripping narrative following a nuclear disaster, where a team of elite soldiers must navigate various global locations to thwart a terrorist threat. The game offers a unique perspective by allowing players to experience the story from both the heroes' and villains' viewpoints, enhancing the emotional intensity of the plot.

The game features console-quality graphics powered by the Havok Engine, providing realistic animations and dynamic environments that elevate the overall experience. A revamped multiplayer mode introduces an extensive loadout system, enabling players to customize their gameplay with over 20,000 weapon configurations. Additionally, a new ranking system encourages competition among players, making it a comprehensive and engaging title for action game enthusiasts.