98 tools and guides in Games. Pick one and use it right away.
Enter participant names and outcomes to draw a random ladder (ghost leg / amidakuji) that fairly assigns who gets coffee duty, turn order, or a penalty. Free ladder game.
Games βClassic 15 puzzle game where you slide numbered tiles into order from 1 to 15 using the empty space, with move count and timer tracking.
Games βFree classic sudoku puzzle β fill a 9x9 grid with 1-9 so no row, column, or 3x3 box repeats a number.
Games βBeginner's guide covering the count, point value, and movement rules for all six chess pieces.
Games βFind the rule hidden in a number sequence and guess the next number in this logic-based brain quiz.
Games βA 4-choice multiple choice quiz for practicing times tables from 2 through 9, with score tracking.
Games βSolve as many addition, subtraction, multiplication, and division problems as you can in 60 seconds.
Games βClick the instant the screen turns green to measure your reaction time in milliseconds.
Games βClick as many randomly popping-up moles as you can in 30 seconds to rack up points.
Games βGuess a country name letter by letter from a hint β six wrong guesses and it's game over.
Games βPlay nonogram for free β a logic puzzle where you fill in cells based on row and column number clues to reveal a hidden picture.
Games βExplore a freshly generated maze every time using the arrow keys or on-screen buttons and find the exit in this free online maze escape game. Choose your difficulty.
Games βAdjust the red, green, and blue (RGB) sliders to mix a color as close as possible to the target color in this free online color matching game.
Games βA color-word reaction game based on the Stroop effect, where the color of a word and the color it names can conflict and trip you up. Identify the actual color of the text quickly and accurately.
Games βClick a cell to toggle it and the cells directly above, below, left, and right of it β a free online logic puzzle where the goal is to switch off every light.
Games βPlay classic Minesweeper free right in your browser. Use the number clues to avoid the mines and clear every safe square.
Games βPlay the classic Tower of Hanoi logic puzzle for free: move every disk from one peg to another in the fewest moves. Choose how many disks to play with.
Games βA free sliding number puzzle where you merge matching tiles to build bigger numbers. Use your arrow keys or swipe to play.
Games βFlip two cards at a time to find matching pairs in this free online memory game. Try to beat your best tries count.
Games βWatch a color sequence that gets longer every round, then repeat it back by clicking in the same order. A free brain-training memory game anyone can play.
Games βA brain-training game where you briefly see a string of digits and type them back in order. Each level adds one more digit, measuring your maximum digit span.
Games βSteer the snake with your arrow keys, eat food, and grow longer in this free classic Snake game. The game ends if you hit a wall or your own tail.
Games βMove the paddle with your mouse or arrow keys to bounce the ball and break every brick in this free classic Breakout game.
Games βPlay Tic-Tac-Toe against the computer on a 3x3 grid. Choose your difficulty level and try to beat it.
Games βPlay Gomoku, also known as Five in a Row, against the computer on a 15x15 board. Be the first to connect five stones in a row to win.
Games βA click speed test that measures how many clicks per second (CPS) you can make in a set amount of time.
Games βPlay a free online game of Reversi against the computer on an 8x8 board. Trap your opponent's discs between your own to flip them, and win by having more discs.
Games βTake turns dropping discs and be the first to connect four of your own color in a row, horizontally, vertically, or diagonally. Play free with a friend, no install needed.
Games βA free online Rock Paper Scissors game where you face off against the computer. Your win-draw-loss record is tracked automatically.
Games βType the given English sentence exactly as shown to measure your typing speed in characters per minute (CPM) and your accuracy, with this free online typing speed test.
Games βGuess the computer's secret number, made of unique digits, using only Strike and Ball hints β the classic deduction game known internationally as Bulls and Cows. Choose 3, 4, or 5 digit difficulty.
Games βUnscramble the jumbled letters to guess the original English word in this free online word scramble (anagram) game. Each puzzle comes with a helpful clue.
Games βGuess the secret 5-letter word in 6 tries or fewer. Green means the right letter in the right spot, yellow means the letter is in the word but in the wrong spot.
Games βGuess the capital city of 42 countries in a multiple-choice quiz. Track your score as you sharpen your world geography knowledge.
Games βGuess the country from its flag in a multiple-choice quiz covering 71 countries. Track your score while sharpening your knowledge of national flags.
Games βA first-time viewer's guide to American football β how downs work, how scoring works, game length, and the handful of rules that make everything else on screen make sense.
Games βA first-time viewer's guide to baseball β how innings and outs work, balls and strikes, scoring, defensive positions, and the extra-innings rule that speeds up tied games.
Games βA first-time viewer's guide to basketball β scoring values, the shot clock, personal fouls, player positions, and how NBA rules differ from college basketball.
Games βHow NHL-style ice hockey actually works β periods, icing and offside, penalties and power plays, and how overtime and shootouts decide games that end tied.
Games βA step-by-step walkthrough of algebraic chess notation β how squares, pieces, captures, and special moves like castling are written down β so a line of game notation stops looking like code.
Games βThe standard poker hand rankings from royal flush down to high card, explained with what actually breaks a tie when two players hold the same type of hand.
Games βA reference guide to the structure of a standard deck of playing cards β suits, ranks, face cards, and jokers β and why the same 52-card deck underlies so many different games.
Games βAn introduction to bridgeβs four-player partnership structure, bidding and the contract, and the role of the dummy hand β enough to make sense of a hand in progress even with zero prior experience.
Games βExplains the basic rules of Gomoku, how to win, and a few opening and defensive ideas beginners often use β understand the rules and you can start playing right away, no memorization required.
Games βHow a classic Simon-Says-style color sequence memory game works, the rule that makes each round harder, and a few practical tips for remembering longer sequences.
Games βHow a multiple-choice world flag quiz is typically structured, why some flags are commonly confused with each other, and practical tips for learning to recognize national flags faster.
Games βHow spot-the-different-shade speed games work, why the puzzle gets harder in a very specific way as rounds progress, and the visual-search science behind why your eyes struggle to find a barely-different tile.
Games βA guide to logic grid deduction puzzles β the classic "who likes what" format that uses a handful of clues and pure elimination, with the grid-based solving method and a look at where the puzzle style came from.
Games βHow chain-reaction territory strategy games work β orbs, critical mass, and cascading explosions that capture the board β plus the corner-and-edge strategy that separates strong play from weak play.
Games βHow click-speed tug-of-war games work, why relative click rate rather than total clicks determines the outcome, and the clicking techniques players use to gain an edge in this fast-twitch browser game genre.
Games βHow balance-scale weighing puzzles work, the number-partitioning math underneath the mechanic, and a practical strategy for sorting numbered weights onto two pans so the scale balances exactly.
Games βHow tower defense games work at their core β enemy waves, tower placement, and economy management β plus a short history of how the genre grew from custom game mods into a mainstream game category.
Games βHow tilt-maze marble games work β simulated gravity, momentum, and control input β plus the long history of physical labyrinth toys that these digital versions are directly modeled on.
Games βHow robot command sequence puzzles work β building an ordered list of move and turn instructions to route a robot to a goal β and why this exact mechanic is one of the most widely used tools in teaching programming fundamentals.
Games βHow loop-drawing number puzzles work β numbered cells that tell you how many surrounding edges belong to a single continuous loop β plus the puzzle's origin at Nikoli, the Japanese publisher famous for popularizing Sudoku.
Games βWhat a clicks-per-second (CPS) test measures, the clicking techniques competitive clickers use to push their scores higher, and how the format grew out of competitive Minecraft PvP into a genre of its own.
Games βHow to solve mate-in-one chess puzzles β the simplest tactic-training format in chess β including the definition of checkmate, common mating patterns to recognize, and the scanning method that finds the winning move fast.
Games βHow digit span memory games work, the real cognitive science behind them β including George Miller's "seven plus or minus two" idea β and the chunking strategy that reliably improves how many digits you can recall.
Games βHow to play five of the world's best-known dice games β Craps, Liar's Dice, Farkle, Yahtzee-style poker dice, and Pig β with core rules and basic strategy.
Games βHow a ladder lottery β also known as ghost-leg drawing or Amidakuji in Japan β fairly assigns random outcomes to a group of people, and why the method guarantees no two people end up at the same result.
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