Call of Duty 4: Modern Warfare is a 2007
first-person shooter video game developed by
Infinity Ward and published by
Activision. It is the fourth main installment in the
Call of Duty series. The game breaks away from the
World War II setting of previous entries and is instead set in modern times. Developed for over two years,
Modern Warfare was released in November 2007. The story takes place in the year of 2011, where a radical leader has executed the president of an unnamed country in the Middle East, and an ultranationalist movement ignites a civil war in Russia. The conflicts are seen from the perspectives of a U.S. Marine Force Recon sergeant and a British SAS commando and are set in various locales, such as the United Kingdom, the Middle East, Azerbaijan, Russia, and Ukraine. The multiplayer portion of the game features various game modes and contains a leveling system that allows the player to unlock additional weap0ns, weap0n attachments, and cam0uflage schemes as they advance. Call of Duty 4: Modern Warfare is a first-person shooter. A character can be positioned in one of three stances: standing, crouching, or prone, each affecting the character's rate of movement, accuracy, and stealth. Using cover helps the player avoid enemy fire or recover health after taking significant damage. As such, there are no armor or health power-ups. When the character has taken damage, the edges of the screen glow red and the character's heartbeat increases. If the character stays out of fire, the character can recover. When the character is within the blast radius of a live gre-nade, a marker indicates the direction of the gre-nade, helping the player to either flee or toss it back to the enemy.