Call of Duty® 4: Modern Warfare® (2007)

The introduction of three new classes, Assault, Support, and Recon, marked a significant content update on October 21, 2011, offering players unique unlock patterns for gear and perks. This update also revamped the kill streak system, shifting to a points-based reward system that encouraged objective play. The year saw the release of the Galactic Warfare mod, bringing Star Wars-themed gameplay into the mix.

• New Classes: Assault, Support, and Recon classes launched on October 21, 2011, each with distinct unlock methods.
• Galactic Warfare Mod: The Star Wars mod, Galactic Warfare, launched on July 5, 2011, featuring blaster battles between Rebels and the Empire.
• Revamped Kill Streak System: On October 21, 2011, the kill streak rewards were reworked to be earned through points, promoting teamwork and objective captures.
• Support for Dedicated Servers: Announced on October 21, 2011, Modern Warfare 3 will feature dedicated server support, including a server browser and voting capabilities.
• Improved Perk Balancing: Efforts were made on October 21, 2011, to balance perks and avoid overpowering abilities like those seen in Modern Warfare 2.
• Enhanced Graphics Features: On October 21, 2011, graphics enhancements were introduced, including SSAO rendering and anti-aliasing improvements.
• Integration with Steam: Full integration with Steam occurred on October 21, 2011, bringing in features like a friends list and Valve's anti-cheat technology.