Last updated: March 2026
What Is Spades?
Spades is a classic partnership trick-taking card game for four players where the goal is to accurately predict and win the number of tricks you bid each hand. You and your AI partner (North) team up against two AI opponents (West and East) in a race to reach 500 points.
What makes Spades unique among trick-taking games is that spades are always trump, the bidding phase creates strategic tension, and the bags penalty prevents sandbagging. Every hand involves a balancing act between winning enough tricks to make your bid without taking too many overtricks.
Spades became wildly popular in the United States through college campuses and military barracks, and has been a staple of online card gaming since the early days of the internet. This free version features a cooperative AI partner, full scoring with bags tracking, and nil bid support.
How to Play
Bid your tricks. After the deal, look at your 13 cards and bid how many tricks you think you can win. Count your aces and kings, consider your spade holding, and factor in voids (suits with zero cards). Your team bid is your bid plus your partner's.
Follow suit. The player left of the dealer leads the first trick. You must play a card of the led suit if you have one. If you cannot follow suit, you may play any card — including a spade to trump the trick.
Win tricks strategically. The highest card of the led suit wins the trick — unless a spade is played, in which case the highest spade wins. Try to win exactly what you bid. Too few tricks loses points, too many accumulates bags.
Watch your bags. Every overtrick beyond your bid adds 1 bag. When your team reaches 10 bags, you lose 100 points and the counter resets. Bid accurately to avoid this penalty.
Strategy Guide
Bid conservatively at first. New players tend to overbid. Count only sure tricks — aces, and kings in long suits. Queens and jacks are not guaranteed winners. It is better to underbid by one than overbid by one.
Use spades wisely. Do not waste high spades early. Save the ace and king of spades for when you need to win critical tricks later. Low spades can be used to trump opponents' aces in other suits.
Communicate through play. In partnerships, what you lead tells your partner about your hand. Leading a high card shows strength in that suit. Leading low shows length without top honors. Pay attention to what your partner leads.
Frequently Asked Questions
What are the rules of Spades?
Spades is a 4-player partnership trick-taking card game. After dealing 13 cards each, players bid how many tricks they expect to win. Spades are always trump. You must follow suit if able. Teams score 10 points per bid trick if they make it, lose 10 per bid if they don't. Overtricks (bags) count as 1 point each but every 10 bags costs a 100-point penalty. First team to 500 wins.
What is a nil bid in Spades?
A nil bid means you promise to take zero tricks. If you succeed, your team earns a 100-point bonus. If you take even one trick, your team loses 100 points. It is a high-risk, high-reward play best attempted with a weak hand — no aces, few high cards, and a short spade holding.
What are bags and why do they matter?
Bags are overtricks — tricks you win beyond what your team bid. Each bag is worth 1 point, which sounds good, but every time you accumulate 10 bags your team gets a 100-point penalty. This prevents teams from overbidding low and sandbagging their way to victory.
When can I play spades (the suit)?
Spades cannot be led until they are 'broken.' Spades break when a player who cannot follow the led suit plays a spade as trump. After that, spades can be led freely. If your hand contains only spades, you may lead them even before they are broken.
How good is the AI partner?
Your AI partner (North) uses a cooperative strategy. It counts high cards for accurate bidding, leads your strong suits when possible, and protects your nil bids by playing high to win tricks. It tracks cards played and adjusts strategy based on how many tricks the team still needs.
How does scoring work when a team goes negative?
If a team's score drops to -200 or below, they lose immediately regardless of the other team's score. This can happen from repeated failed bids or failed nil attempts. Watch your bids carefully to avoid a catastrophic negative spiral.