Realm Royale will allow cross-play between 4 platforms

Realm Royale
Release Date: Jun 5, 2018
Official Website: Link
Crossplay platforms:
Realm Royale will support cross-play across multiple platforms. It will be possible to play together with your friends on Windows PC, Playstation 4, XBox One and Nintendo Switch. Please check out all the details on the game's official website!
Summary:
Be the last Champion standing in Realm Royale! Choose a class, then loot deadly weapons and powerful abilities to create your own Champion. Explore a fantasy world from horseback, and craft game-changing legendary gear. Can you survive the first 100-person fantasy Battle Royale?

Screenshots:
Realm Royale is also known as:
  • Realm Royale Founder's Pack
Supported game modes:
  • Multiplayer
  • Battle Royale
Supported player perspectives:
  • First person
  • Third person