You may optionally choose to play in teams of 2. They will not be able to join after you start the game.
Be sure all other players have joined before you start the game. Once you select Play Spades, you'll see the other players who have joined the room and an option to Start Game. If you're playing with others, they can join your game by using the same room name. The room name can be anything you like (ex: 'Joan's room' 1). To get started, enter a name for yourself (ex: 'player-1') and a room name.
Spades is multiplayer! You can play with a total of 2-4 players. To win, players try to score the most points. Spades is a trick-taking card game using a standard 52 card deck.