: Completing the campaign unlocks a timed "Arcade Mode" with score multipliers for added replayability. 2. Industry-Defining Multiplayer
: Introduced the addictive leveling system, allowing players to unlock new weapons and equipment as they play. call-of-duty-4-modern-warfare-full-kuyhaa
: Players can find 30 hidden "intel" laptops throughout the campaign to unlock cheats like "Slow-Mo" or "Cluster Bombs" for fun. 4. Modding & Community Support : Completing the campaign unlocks a timed "Arcade