To play Rocket League break up-display screen on RL Trading Steam, you will need controllers. Keyboard/mouse is not presently supported with regards to cut up-display screen play. Any DualShock 4, Xbox One, or Steam controller will paintings best.
With two controllers linked, launch Rocket League. At the primary menu, Player 2 need to press the Options/Menu/Start button on their controller. After that, Player 2 will join the celebration, and you may play Rocket League split-display screen offline or online.
As is the case with Steam, the Epic Games Launcher does no longer support keyboard/mouse and controller pairing for RL Prices Rocket League split-display. So, you may want two controllers to play split-display on Epic Games. Epic Games supports DualShock 4, Xbox 360, and Xbox One controllers.
