CABIN FEVER
Party games for one big screen and everyone's phones. Nothing to install: the TV's browser hosts the game, phones join with a code.
Open the host on a TV or laptop, then scan its QR code with your phone. Phones connect straight to the host's browser; nothing about your game is stored anywhere else.
Privacy: to find each other, the TV and phones use a free introduction service (PeerJS) and public address servers (Google, Cloudflare), which see your devices' internet addresses, not your game. For a game that never leaves the house, run the Docker version.