Sign into an Xbox account and launch Call of Duty: Black Ops III. After reaching the Main Menu, connect a second controller. Press A on the second controller to connect the other player online. Once connected, press A again to attach the split screen player.

Zombies Chronicles is a separate content expansion for Call of Duty: Black Ops III, and all stats, progress, and leaderboard placement start at the beginning. Also, Zombies Chronicles does not affect your stats, progress, and leaderboard placement when playing these maps outside Zombies Chronicles.