Full Crossplay Support Comes to PS4 Starting With 'Fortnite

The open beta allows crossplay, progression, and commerce across the PS4, Android, iOS, Nintendo Switch, Xbox One, PC, and Mac platforms. 

Gearbox Is Adding Borderlands 3 Crossplay, But Gearbox Was Told To Remove PS5 And PS4 Support - Game Informer

Sony's Cross-Platform Lockout in Fortnite is Bad for Everybody, by Jared Lee, SUPERJUMP

Sony enables Fortnite cross-play between PS4, Xbox One and Nintendo Switch

An Epic cross-play journey: Paragon, Fortnite, and what comes next - Epic Online Services

A List of All PC / PS4 Crossplay Games : r/PS4

Microsoft blames Sony over lack of Fortnite cross-play for Xbox One and PS4 players

PlayStation 4 Slim 1TB Console - Fortnite Bundle : Video Games

How to Enable Crossplay in Fortnite (PS4, Xbox One, Switch, & PC)

OcUK Ultimate Crossplay Guide - Overclockers UK

Fortnite Mobile' Is Coming To iOS, Will Feature PS4, PC Cross Play

PlayStation 4 opens up cross-platform play, starting with Fortnite, PlayStation

Fortnite is Headed to Next-Gen Consoles

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

Fortnite Battle Royale Is Coming to iOS and Android With Full Cross Play Support With PS4, PC

Fortnite briefly features PS4 and Xbox One cross-platform play (update) - Polygon