Steam

1. Once all the controllers* are connected, launch the game
2. While in the Main Menu, Player 2 needs to press:
   DS4 Options button
   Xbox Menu button
   Steam Controller Start button
3. Player 2 will then join the party and you can play any Offline or Online mode together

PlayStation 4

1. Connect all controllers and log in with the respective PSN or guest account
2. Launch the game and while in the Main Menu, Player 2 only needs to press the Options button on the controller in order to join the party  
3. Player 2 will then join the party and you can play any Offline or Online* mode together

*Note: A PlayStation Plus subscription is required for the main account. As long as this account has the console set as its Primary PS4, any other account does not require a PlayStation Plus subscription. However, to play any Online mode, all accounts must have a PSN account in order to connect to the PlayStation Network.

Guest accounts that are not signed in to the PlayStation Network may only play Offline modes.

Xbox One

1. Connect all controllers and log in with the respective Xbox or guest account
2. Launch the game and while in the Main Menu, Player 2 only needs to press the Menu button on the controller in order to join the party
3. Player 2 will then join the party and you can play any Offline or Online mode together

Nintendo Switch 

1. Start the game on your Switch
2. Player 2 should then press - if a single Joy-Con is being used, or + if the player is using both Joy-Con controllers/Pro Controller
3. The second player will then log in with their Nintendo account or select "skip" to use a temporary local profile 
4. Both players will then press L+R (or SL+SR on single Joy-Con controllers) to confirm the controllers, join one same party and be able to play any Offline or Online mode together