Texas hold 'em
In No Limit, there is not a limit of how much can be bet at any time. That is, it is just like Spread Limit, but with no maximum. A player can bet up to all money as he has. If a player bets all of his money, he is said to be "All In". If a player bets more money than another player has, the second player can call by going All In. If only those two players stay in the hand (all other players fold), the first player takes back any money that is over the amount the player going All In has. At this point, all betting stops and the dealer deals out the rest of the cards.