Games
2048
Slide the numbered tiles to merge them and reach 2048
Do Not Press
A strange button. Don't press it.
Breakout
Bounce the ball to clear all the bricks
Crossword
Fill in the correct words from the given clues
Arcade
A collection of mini arcade games: Flappy Bird, Jump, Frogger, Dodge, Traffic
Flow Typewriter
The text disappears if you stop typing
Cellular Automata
Cellular automata: Conway's Game of Life and a custom rule editor
Gomoku
Challenge a simple AI or play against a friend
Number Guess
Guess the number I'm thinking of
Tower of Hanoi
A classic recursion puzzle; move all the disks
Hitori
Black out cells so no number repeats in any row or column
Kakuro
A number-filling puzzle; sums across rows and columns
Klotski
Help Cao Cao escape from the Klotski block puzzle
Progress Bar
Life progress bars: see how far you've come (for fun only)
Life Reboot Simulator
If life could start over... (for fun only)
Lights Out
Click the bulbs to toggle surrounding colors; turn them all off to win
Memory Match
Flip the cards to find all the matching pairs
Metaballs
Move the mouse and watch the orbs merge
Minesweeper
Classic minesweeper; left click to reveal, right click to flag
Nonogram
Fill the grid from number clues to reveal a picture
Plinko
Aim and launch the ball to score points
Personality Test
Find out what kind of person you are (for reference only)
Reversi
Flip your opponent's pieces and rule the board
Snake
Use arrow keys or WASD to eat and grow
Sokoban
Push all the boxes onto their target spots
Shoot 'Em Up
A multi-mode arcade shooter — switch between space invaders, tanks, asteroids, centipede, bullet hell, and more from the in-page tab bar.
Sudoku
A classic number logic puzzle
Cyber Tarot
78 tarot cards, purely random (for fun only)
Tetris
The classic block-clearing game
Tic-Tac-Toe
The classic X/O showdown
Typing Speed Test
Test your code typing speed (WPM)
Cyber Wooden Fish
Tap the cyber wooden fish to earn digital merit
Battleship
Sink the enemy fleet before they sink yours.
Blackjack
Play blackjack against the dealer.
Checkers
Capture all enemy pieces; kings rule the board.
Color Flood
Flood the board with one color before moves run out.
Connect Four
Drop discs and line up four in a row.
Hangman
Guess the hidden word one letter at a time.
Lissajous
An animated Lissajous figure you can tune with sliders.
Mastermind
Crack the secret color code in 10 tries.
Plasma
An animated sin/cos color plasma field.
Slot Machine
Spin the reels and win big!
Tron
Light-cycle duel — outlast the AI without crashing into a trail.
Voronoi
Animated Voronoi diagram colored by nearest seed point.
Whack-a-Mole
Whack the moles as they pop up before time runs out.
Yahtzee
Roll five dice and score the best categories.
Wordle
Guess the 5-letter word in 6 tries
Roller
Roll dice or flip a coin
Dots and Boxes
Draw lines on a dot grid and claim squares against a simple AI.
Match Three
Swap adjacent gems to match three or more in a row.
Make 24
Combine four numbers with + - x / to reach exactly 24.
Maze
Find your way through a randomly generated maze.
Pong
Classic Pong on canvas: move your paddle with mouse or arrow keys against the CPU.
Reaction Time
Measure how fast you can react to a green signal.
Rock Paper Scissors
Beat the computer in a classic rock-paper-scissors duel.
Simon Says
Repeat the growing color sequence from memory.
Sliding Puzzle
Slide the tiles to restore the 1–15 number order.
Word Scramble
Unscramble the letters to rebuild the English word before time runs out.
Solitaire
Classic Klondike solitaire — build foundations by suit and clear the tableau.
Backgammon
Race to bear off all your checkers; hit opponents and use the dice wisely.
Ludo
Race your four tokens around the board, capture opponents and reach home first.
Chinese Checkers
Hop your pegs across the star to the opposite corner; single steps or chained jumps.
Pac-Man
Eat all the dots while dodging the ghosts in a maze.
Chess
Play chess against a friend, race the clock in blitz, or face the computer — castling, en passant and promotion included.
Snakes & Ladders
Roll the dice, climb ladders, slide down snakes
Scrabble Scorer
Score words by letter and board multipliers
Jigsaw Puzzle
Upload an image and piece it back together
Bubble Shooter
Shoot bubbles and pop three or more of a color
Zuma
Match and clear rolling chains of colored balls
Go
Board game with simplified life-and-death rules
Chinese Card Games
Card games: Dou Dizhu, Chou Wang Ba, Gan Deng Yan, Pao Pao Kuai
Texas Hold'em
Single-player Texas Hold'em practice
Jenga
Digital block-stacking — don't topple the tower
Werewolf Moderator
Helper to run a game of Werewolf
Undercover Moderator
Helper to run a game of Who's the Undercover
Draw & Guess
Shared whiteboard with a word bank
Gartic-style Pictionary
Take-turns drawing and guessing
Rhythm Game
Rhythm games: Piano Tiles, Taiko, Rhythm Master
Shisen-Sho
Clear matching tiles linked by a path
Bejeweled
Swap adjacent gems to match three or more
Bomberman
Plant bombs to clear enemies in a maze
Tamagotchi
Feed and care for your digital pet
Idle Farm
Run and grow your idle farm
Cookie Clicker
Click-and-idle incremental game
Mini Dungeon
A tiny Roguelike dungeon crawl
Text Adventure
A Zork-style text adventure
MUD-style RPG
A MUD-style text role-playing game
Pipe Mania
Lay pipes to keep the water flowing
Akari (Light Up)
Light every cell by placing bulbs that must not see each other.
Attention Span
Memorize the letters, then count how many times the target appeared.
DnD Character Card
Generate a D&D 5e character sheet with derived stats.
Dominosa
Rebuild the hidden domino tiling from the digit grid.
Drop Water
Chain water-drop explosions until the board is empty.
Game Boy Filter
Render any image in the classic 4-shade Game Boy palette.
Memory Palace
A bigger memory board with 12 pairs — train your spatial recall like a memory palace.
Fish School
Fish boids with schooling and predator avoidance.
Euler Path Challenge
Harder graphs — can you draw an Eulerian trail? We reveal whether an Euler path or circuit exists.
Halma (8x8)
Western Halma on an 8x8 board: hop your six pieces from your corner camp into the opposite camp.
Anagram
Unscramble jumbled letters across six rounds — a live timer tracks your pace while correct answers build your score.
Catan Builder
Roll for resources and build roads, settlements and cities to reach victory points.
CRT Filter
Retro CRT screen: scanlines, flicker, vignette and curvature over a demo scene.
Scanline FX
Pixel scanlines and an RGB subpixel mask over a colorful demo canvas.
Hashiwokakero (Bridges)
Connect every island with the exact number of bridges shown.
Hex
Connect your two opposite sides on the hexagonal board before your rival.
Idle Fishing
Cast your line, catch fish, and idle your way to riches.
Position Memory
Watch the cells flash, then repeat the sequence by position.
Mental Math
Solve as many arithmetic problems as you can in 30 seconds.
NES Palette
Browse and copy the classic 64-color NES palette.
Nurikabe
Flood the grid so each numbered island keeps its exact size.
Turn-Based Combat Simulator
Resolve a duel round by round between two sides until one falls.
Weapon Damage Calculator
Roll dice, compute expected damage and simulate 1000 attacks.
Monster Bestiary
Browse and filter a bestiary of D&D monsters with stats.
Slitherlink
Draw one closed loop so each number matches its bordered edges.
Stroop Test
Click the button matching the ink color, not the word meaning.
Tents
Place one tent per tree, never touching, matching the row/column counts.
Queue Simulator
Simulate an M/M/c queue and watch waiting lines, utilization and service.
Election Simulator
Allocate parliamentary seats by the largest-remainder proportional method.
Life Simulator
Balance hunger, fun, energy, social and money across each day of life.
Ecosystem Simulator
Watch grass, rabbits and wolves interact in a predator-prey food web.
Tower Defense
Place towers along a winding path and stop waves of enemies from reaching your base.
Deckbuilder
Build a deck of attack, block and buff cards and defeat the enemy in turn-based combat.
Detective Deduction
Read the clues, cross off impossibilities and accuse the right suspect, weapon and room.
Script-Murder Judge Assistant
A bookkeeping tool for the judge: secretly deal roles, track phases, deaths and votes.
TTRPG Session Log
A session log with a dice roller and an initiative tracker, persisted in your browser.
Einstein's Riddle
Solve the classic five-house logic puzzle by filling the grid from the clues.
Logic Puzzles
A collection of logic puzzles: analogy, number grid, sequence, shape and spatial reasoning.
Party Manager
Track your adventuring party with HP bars, armor class and status.
Quest Board
Track quests by difficulty and status, and add your own objectives.
Dungeon Generator
Procedurally generate a dungeon of rooms and corridors on a grid.
Visual Field Test
A dot flashes in your visual field; click where you saw it to map your coverage.
Color Blind Test
Ishihara-style plates: read the hidden number made of contrasting dots.
Hearing Test
Estimate your hearing threshold per frequency with a binary-search tone test.
Rhythm Test
Tap on the beat of a metronome and measure your average timing offset.
Two-Hand Coordination
Keep the mouse on one target while steering a second marker with arrow keys onto another.
Keypad Trainer
Type the target number on the on-screen keypad as fast as possible; track time and errors.
Rapid Recognition
A symbol flashes briefly, then pick the matching one from four options as fast as you can.
TV Static
Old-TV static noise with scanlines, flicker and a vignette. Toggle power and tune intensity.
VHS Effect
Upload an image or use the default scene, then apply chromatic aberration, scanlines, noise and a rolling tracking bar.
ASCII Renderer
Downsample a scene (or your image) to a luminance grid and map it to ASCII characters.
Terminal Adventure
A tiny text adventure in a fake terminal. Explore 2 rooms, grab a key and solve the door puzzle to escape.
8-bit Sound FX
A square-wave synth with a piano keyboard, retro SFX presets (Coin, Jump, Hit, Powerup) and an arpeggio player. Audio starts on first click.