Forza Horizon 4 allows cross-play between 2 platforms

Supported crossplay platforms
Release Date: Oct 2, 2018
Official Website: Link
Supported crossplay platforms:
Forza Horizon 4 is supporting cross-play across multiple platforms. Currently it is possible to play together with your friends on Windows PC and XBox One.
Live the Horizon Life when you play Forza Horizon 4. Experience a shared world with dynamic seasons. Explore beautiful scenery, collect over 450 cars and become a Horizon Superstar in historic Britain.

Genres and Themes: Racing Sandbox
Supported game modes:
  • Single player
  • Multiplayer
Supported player perspectives:
  • First person
  • Third person