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

Sony is backing down and supporting Fortnite cross-play on PlayStation 4. The policy change will open up gamers to play across PS4, Xbox One, and Nintendo Switch

Epic boss says Sony charges publishers a cross-play fee in certain circumstances

Sony's stubborn stance on cross-compatibility is holding back games

Microsoft suggests Fortnite PS4 vs. Xbox One cross-play could happen - The Verge

Sony reportedly charges developers to use cross-play

Of course Sony is not allowing Fortnite cross-play between PS4 and Nintendo Switch

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

Cross platform - Release date and Q&A - Fishing Planet Forum

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

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

Fortnite Finally Comes Nintendo Switch; But Sony Spoils The Party With PS4 Cross-Play Snub

Xbox gamers are now playing against PS4 players in Fortnite - The Verge

Sony enables Fortnite PS4 crossplay with Xbox, Switch, PC and mobile

Cross Platform Gaming

Fallout 76 won't have cross-platform multiplayer because of Sony - CNET