Atom Universe will allow cross-play between 2 platforms

Atom Universe
Crossplay platforms
Release Date: Mar 4, 2016
Official Website: Link
Crossplay platforms:
Atom Universe will support cross-play across multiple platforms. It will be possible to play together with your friends on Windows PC and Playstation 4. Please check out all the details on the game's official website!
Atom Universe is a Free-to-Play social Virtual World: a theme park featuring fun people and fun things: plenty of games, rides and amusements, as well as advanced social interactions.
Genres and Themes:

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Supported game modes:
  • Multiplayer
  • Massively Multiplayer Online (MMO)