Instructions
Mini games
How to use
Pick a game from the list. Each game shows how to play in a line under the board. The All games button or Esc returns to the list.
Each round is short, so it fits a wait for a timer.
Supported input
Thirty-six games: reaction time, pairs, count up, merge numbers, Minesweeper, Snake, tic-tac-toe, lights out, Tower of Hanoi, repeat the order, typing, 15 puzzle, number baseball, odd one out, Sudoku, Breakout, falling blocks, connect four, Reversi, maze, nonogram, code breaker, Pong, jump, whack-a-dot, aim, tap speed, stop at five, opposite, memory squares, number memory, quick sums, up or down, higher or lower, pig dice and rock paper scissors. Works with mouse, touch and keyboard.
Input example
5 reaction rounds · 12 cards · 16 numbers
Result example
Fastest 231 ms · average 268 ms
Troubleshooting
Pressing before the colour changes repeats that round. A number out of order is ignored. New game starts over.
Limitations
Only best scores are kept on this device. There is no leaderboard or multiplayer. Reaction times include device and display delay. A Sudoku board is not guaranteed to have a single solution; any filling that follows the rules counts.
How it works
Reaction time is the difference between the colour change and the press, measured with performance.now. Cards and numbers are shuffled with the browser's cryptographic random source.
Units & precision
Reaction times are whole milliseconds; other times are shown to 0.01 seconds.