ReOS Table is a tabletop game run from one host machine. A game board is shown on a TV, and players join from their own phones by scanning a QR code at the table and signing in with Google.
Each phone controls one character in the current game. Nothing is installed on the phone; the game page runs in the browser.
Access is by invitation only: the QR code or short code shown at the table is single use, and there is nothing to join without one.