Board Game Arena is the largest free online boardgame platform with 800+ games.
Sign up with email or via Google, Facebook, or Apple.
Use the "Express game" feature: pick a game, choose speed and player count.
BGA supports both real-time and turn-based async play.
BGA has a karma system that penalizes quitting mid-game.
Pro tip: enable "Additional confirmations" in settings to prevent misclicks.