Someone opens grouparty.com on a TV, a projector or a laptop and picks a game. The screen shows a QR code and a 4 character room code. Everyone else scans the code, or types the room code at grouparty.com/join. They pick a nickname and they are in. Each phone works as a private controller. It takes under a minute to start.
There is nothing to install. There is no account and no sign-up. It works in any modern browser. Players only use a nickname, so nobody has to share personal data.
