Rules, strategy, and answers for every game on the site
Knowing the rules gets you in the game; knowing the strategy wins it. Each guide below covers the complete rules of the game, the core strategic ideas that separate beginners from strong players, concrete tips you can apply immediately against our AI (or your friends), and answers to the questions players ask most. Pick a game, read for five minutes, and go win something.
The classic vertical connection game. Face an AI powered by bitboards and deep search, or challenge a friend online.
American checkers on the classic 8x8 board with forced captures, kings, and four AI difficulty levels.
Also known as Othello. Sandwich your opponent's discs to flip them. Every move can swing the whole game.
The ancient sowing game (Kalah rules). Count seeds, chain extra turns, and out-capture a clever AI.
Complete chess with castling, en passant, and promotion. Play a searching AI engine or a friend in real time.
Five in a Row on a 15x15 board. Build open fours and double threats before the AI shuts you down.
Tic-tac-toe, evolved: win small boards to claim squares on the big board, while every move dictates your opponent's options.
Draw lines, complete boxes, and go again. Mastering chain control turns this childhood doodle into a real strategy game.
A medieval classic with three phases: place, move, and fly. Form mills of three to capture the AI's men.
The 5,000-year-old racing game. Roll dice, hit blots, build primes, and bear off before the AI does.
Place your fleet and call your shots. The hard AI hunts with probability maps, so hide your ships well.
The elegant connection game on an 11x11 rhombus. One player connects left-right, the other top-bottom. Someone always wins.
Place stones on a 19x19 board. Win by getting five in a row or by capturing ten of your opponent's stones.
The 4,000-year-old strategy game. Place stones, surround territory, and capture groups. Play on 9x9, 13x13, or 19x19.
Move and jump your marbles across the six-pointed star board to reach the opposite triangle before the AI.
The fast-paced shedding card game. Empty your hand first, use eights wisely, and don't get stuck drawing.
The classic card game of probability: reach 21 against the dealer, with splitting, doubling down and optional basic-strategy hints.
Classic Klondike solitaire with drag-and-drop, unlimited undo, and score tracking. The perfect way to unwind.
The classic two-player card game. Draw, discard, and form sets and runs to reduce your deadwood to zero.
The classic four-player trick-taking game. Avoid taking hearts and the Queen of Spades - or shoot the moon.
Partner up with an AI teammate against two AI opponents. Bid on tricks, use spades as trump, and race to 500.
The classic pegging game. Discard to the crib, count fifteens and pairs, and peg your way to 121 points.
The famously addictive sliding-tile puzzle. Merge matching tiles, plan your corners, and chase ever-bigger numbers.
The desktop legend with three board sizes, flagging, chording, and a guaranteed-safe first click.
Freshly generated puzzles at four difficulties with pencil marks, error checking, and a solve timer.
Guess the five-letter word of the day in six tries. Everyone gets the same word - come back every day to keep your streak alive.
The classic concentration game. Flip cards to find matching pairs in as few moves as possible.
The classic 15-puzzle with three grid sizes. Slide numbered tiles to put them in order with the fewest moves.
Solve picture logic puzzles by filling in cells according to number clues. Three sizes from 5x5 to 15x15.
Fill digits so each run of cells adds up to its clue number. Like a crossword puzzle with numbers instead of words.
The classic tile-matching solitaire game. Find and match pairs of free tiles to clear all layers from the board.