It's important to mention that while Black Ops 1 is still playable in 2024, the player population may have decreased compared to its prime years after release. This means that finding multiplayer matches might take longer or result in fewer opponents.
Like usual, Call of Duty's Multiplayer can be played split-screen offline. Everything in the game will be accessible for user to Create A Class the instant they start. There is no leveling up system, and all Game Modes and Maps (Except Turbine) can be used.