Rules of the Game

Crazy Eights is a shedding game played with a standard 52-card deck - it's the folk ancestor of UNO, played with real cards. In this two-player version each player is dealt 7 cards, the rest of the deck becomes the face-down stock, and one card is flipped to start the discard pile (if an 8 turns up, it is shuffled back and another card is flipped). On your turn you must cover the top discard with a card matching its suit or its rank: on the 7 of hearts you may play any heart or any 7.

Eights are completely wild. An 8 can be played on anything, and the player who lays it declares the suit the opponent must follow next. If you cannot play, you draw from the stock. PlayVersusAI uses a common tournament-style cap: draw up to three cards on your turn, and if you still can't play, you pass. When the stock is empty you may pass without drawing. The first player to empty their hand wins outright. If the stock is exhausted and both players pass consecutively, the game ends in a count-out: each 8 in hand scores 50 points against you, face cards 10, aces 1, and number cards their pip value - the lower total wins.

A Turn-by-Turn Walkthrough

Suppose the flipped starter is the J♣ and your hand is 4♣ 9♣ 9♦ K♥ 8♠ 2♦ 6♦. You could play either club, but look further ahead: playing the 9♣ keeps the active suit clubs and sets up a rank pivot - if clubs stop suiting you later, a second 9 flips the game into diamonds, your longest suit. The AI answers with the 2♣; you play the 4♣. It plays the Q♣, and now you're out of clubs with no queen.

Here is the decision that separates casual players from good ones: you hold the 8♠, but you also have three draws available and a hand full of diamonds. Spending the wild now to name diamonds is tempting, and with a hand this coherent it's often right. But if your diamonds were weak, the better line is to draw - you keep the 8 as a guaranteed play for a future turn where you would otherwise be forced to draw three and pass. On PlayVersusAI your playable cards rise out of the fan on your turn, the stock is clickable while you're allowed to draw, and the Pass button only appears once you've drawn three times or the stock is dry, so the legal options are always visible.

Core Strategy

  • Eight timing - the single biggest skill. An 8 spent while you had other legal plays is 50 points of insurance thrown away. Hold it for the turn you'd otherwise draw three and pass, or for the endgame when it guarantees your second-to-last card always plays. The exception: never be caught with an 8 as the stock runs out - it's the most expensive card in a count-out.
  • Suit counting - each suit has 13 cards. Track roughly how many of the active suit have appeared in the discard pile and in your own hand; when hearts are nearly exhausted, a heart lock forces your opponent to burn draws or wilds.
  • Track forced draws - when your opponent draws or passes, note the active suit at that moment. That's a suit they can't answer. Steering back to it every time you gain control is the most reliable pressure in the game.
  • Rank pivots - matching by rank is how you change suits without an 8. Pairs are steering wheels: with two 9s in different suits you can jump from a suit that helps your opponent into one that drowns them. Prefer pivots into your longest remaining suit.
  • Keep a balanced exit - avoid plays that leave your last two cards in the same dead suit. Ending on a pair (rank match) or a card plus an 8 is a hand that almost always goes out cleanly.
  • Endgame point dumping - once the stock drops below five or so cards, a stalemate count-out is a live possibility. Shed kings, queens, and jacks whenever you have a choice of legal plays, and get any spare 8 out of your hand before the music stops.

How the AI Difficulties Differ

Difficulty Behavior
Easy Plays a random legal card, including wasting eights whenever they happen to be legal picks.
Medium Saves eights for when it's stuck, and prefers rank pivots that switch the game into the suit it holds most of.
Hard Everything Medium does, plus it records the suits you drew or passed on and deliberately steers back into them; it also holds its eights until the endgame.
AI Training Hard's suit tracking, plus point management: when the stock runs low it sheds its highest-value cards first to win the count-out if nobody goes out.

The practical counter to Hard and AI Training is to disguise your weaknesses: occasionally draw a card even when you could play, and the AI's model of your "missing suits" gets noisy.

Frequently Asked Questions

Can I play an 8 even if I have a matching card?
Yes. Eights are wild and always legal - the question is whether you should. Spending one while you hold other legal plays usually wastes its value, but declaring your long suit at the right moment can win the game on the spot.
Do I have to play a card if I can?
You aren't forced to. You may draw (up to the three-card cap) even while holding a legal play - sometimes hiding a suit or saving a pivot card is worth the extra card in hand. You can only pass once you've drawn three or the stock is empty.
What happens when the stock runs out?
Play continues without drawing - if you can't play, you simply pass. If both players pass one after the other, the game ends and hands are scored: 50 per 8, 10 per face card, 1 per ace, pip value for the rest. The lower total wins; equal totals are a draw.
Does the rank match work after an 8 is played?
After an 8, the declared suit takes over as the requirement, and the top card's rank is 8 - so your answers are a card of the declared suit or another 8. You can't match the rank the 8 covered up.