On PC, the game needs 125 GB of available storage space.

Modern Warfare II's multiplayer modes do use skill-based matchmaking, or SBMM. By pairing players with comparable skill levels, this method seeks to produce competitive and well-balanced matches that improve the overall game experience. You also can’t rely on gear alone to carry you through the matches themselves.

Although Modern Warfare II strives for realism in both its visuals and gameplay, players' perspectives on whether it is the "most realistic" game differ. While it has sophisticated physics and graphics, it might not outclass comparable games made specifically for the realism of their military simulation.

Certainly, Modern Warfare II is regarded as a financial success. Not long after its release, it became the fastest Call of Duty game to earn over $1 billion in revenue, breaking a number of series records.

Call of Duty: Modern Warfare II launched on October 28, 2022 for PC, Xbox One, Xbox Series X/S, PlayStation 4, and PlayStation 5.

Modern Warfare II itself is not free-to-play. What IS free-to-play, however, is the battle royale mode, Warzone, which you can access without buying the core game.