Sony's PlayStation 4 cross-play feature is out of beta and now available to all developers

The cross-play feature is now open to any game that supports it.

Rocket League' Joins 'Fortnite' in the PlayStation Cross-Play Betas

PlayStation 4 review: Sony's new console is great, but it needs more games - The Globe and Mail

PlayStation 4 finally allows Switch and Xbox cross-play with Fortnite beta

Cross platform games & crossplay games explained 2023 WePC

Cross-Platform Play Now Finally Fully Supported On PlayStation 4 - SPORTbible

PS5 receives version 7 update, featuring Discord integration and VRR support

Sony enabling Fortnite cross-play for PS4 against Xbox and Switch - The Verge

PlayStation 4 500GB Console [Old Model][Discontinued] : Video Games

Sony exec predicts cross-platform will come to other games 'over time' following Fortnite - Dexerto

PlayStation Now enters open beta in UK

Sony charges developers for cross-platform play, court documents reveal