Registered users may

• invite others to join a multi-player game.
• select one or more decks of cards to play with from
  • predefined public decks
  • or private decks they upload.
• specify the number of cards to deal.
• deal.
• configure other aspects of game play such as locking/unlocking the game, admitting all or specific users when a game is locked, removing players, handling out-of-turn clicks (share it as a hint, ignore it, inform that player whose move it is), and more.

Register once -- enjoy unlimited game play with friends.