The time has finally come. After allowing Fortnite to have crossplay on PS4 with every platform last year, Sony has rolled out the ability to let Rocket League join in on the cross-play initiative. While still technically in beta, the move allows users on PC, Xbox One and Switch to knock some balls around with their PS4 brethren.
— PlayStation (@PlayStation) January 14, 2019
To enable the feature, you’ll need to head into the Options menu of Rocket League and make sure the “Cross-Platform Play” box is checked under the Gameplay tab. Once done, matchmaking will put you into lobbies with people from each platform instead of simply PC or PS4.
In a post over on the PlayStation Blog, Psyonix also reassures fans that cross-platform parties are still coming to Rocket League. In the meantime, you can still create private matches and invite friends from any system.
Full Cross-Platform Play Now Live in Rocket League [PlayStation Blog]