Endless Ragnarok crossplay is officially listed between Nintendo Switch 2, PlayStation 5, PlayStation 4, and Steam; Nintendo Switch 2 also supports local communication for up to four players.
Crossplay Platforms
Endless Ragnarok crossplay is one of the clearest official system claims. The checked systems page lists crossplay between Nintendo Switch 2, PlayStation 5, PlayStation 4, and Steam. That means mixed-platform co-op groups have a real official answer.
The PlayStation Store also describes four-player online co-op reaching new heights with crossplay across all platforms. Nintendo’s page lists online play support and explains that online features can require a paid Nintendo Switch Online membership.
Switch 2 Local Communication
The official systems page says Nintendo Switch 2 players can use Local Communication for up to four-player cooperative play. Nintendo’s store page lists local wireless player support separately from online play.
This is important because Endless Ragnarok crossplay and Switch 2 local communication are related but not identical. Crossplay is the online platform bridge; local communication is a Switch 2-specific local wireless feature.
What Is Not Confirmed Here
This page does not claim cross-save, universal account transfer, or every matchmaking detail. If Cygames publishes more account or support rules, this Endless Ragnarok crossplay guide should be updated with exact source links and dates.
For now, the practical answer is simple: Steam, PS5, PS4, and Switch 2 are the listed crossplay set, and platform memberships may still matter.