Speed includes a singleplayer and a local multiplayer mode.
In the singleplayer mode of Speed (Spit/Slam) you play against a computer and in the local multiplayer, you can challenge your friends to play against you.
How to play:
Each player receives a certain amount of cards on their side. A card is playable if the value of the card is one above or below one card in the center of the board (A card with value 2 can be placed on an Ace, and an Ace can be played on a card with value 2). If a card is playable you can click on it and it moves to the center. By tapping on your pile of cards, you receive new ones. If no player can play a card, the center cards get changed. The winner is, whoever can play all of their hand cards first.