Arcade is in beta, and only supports some DirectX 11, DX 9 and OpenGL titles. If you are getting errors and issues while using Arcade, please try the things contained in this article.
Parsec Arcade is our latest feature that helps you play local, offline multiplayer and couch co-op games with your friends, online. It's also the go-to way to play with people from all around the world.
Visit the Arcade tab in Parsec to join any public games, or start your own game and click its icon in the bar at the bottom to host it. You can make it public, or private, and share links to friends that they can paste in the bottom-right section in Parsec.
In comparison to streaming the whole desktop in the Computers tab, Arcade streams just the game to your friends. There's no voice chat echo, and no need to keep a separate chat window open to talk to friends - the host can talk to the people connected via an on-screen Parsec overlay!
Arcade is currently in beta, so you may have some issues depending on the game. At the moment, guests can only use a controller or use the 'keyboard to controller' feature built in Arcade. If you're looking to give guests full control of the mouse and keyboard, consider using the Computers tab to stream the game for now.