While the game lacks an in-game "Online Invite" button, you can use these third-party or platform tools:
Navigate through semi-realistic, stunning environments to chase a "spark" of adventure, helping two children in the background story overcome obstacles. Unravel Two online
A host can use PS Plus Share Play to virtually "hand over" a controller to a friend or play together as if sitting on the same couch. While the game lacks an in-game "Online Invite"