Once someone plays a Spade in this manner, Spades are considered broken. Spades may not be led until they have been broken, or you have nothing else in your hand. Before play begins for each hand, the players must bid on how many tricks they think they will win. Players also have the option of bidding Nil meaning they will win no tricks. If a team is losing by at least 100 points, then a player has the option to bid Blind Nil before they look at their cards.
Spades is a team game.
At the end of the hand, the team scores are determined. If an individual bid nil, and they did not take any tricks, their team receives 100 points, and if they did take a trick, they lose 100 points. Blind nil scores in the same manner as nil, but is worth 200 points. Finally, each trick taken over the amount bid by a team is called a bag. When a team accumulates 10 bags, they lose 100 points.