Brain Games

Test your reaction time, train your aim and find out how much your memory holds. Escape a maze before the light goes out, or play Sudoku in six types. Every game is free, and you can play without an account.

15quizzes

Test your reaction time

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A game counts when you finish one run of it.

Most popular

The Brain Games quizzes that players start most often.

1Reaction TimeTest Your Reaction Time The box turns green at a random moment. Click or tap as fast as you can. The test takes your average of 5 tries.5 triesEasy 2Aim Trainer: ClassicHit 30 Targets Targets appear one at a time. Hit 30 targets as fast as you can. The test takes your average time for each target.30 targetsEasy 3Maze EscapeEscape a Small Maze Find the way out of a new maze as fast as you can. After 5 seconds, the light starts to go out, and you see less of the maze.21 by 13Medium 4Sequence MemoryRepeat the Sequence Tiles light up one after another. Click or tap the tiles in the same order. Each level adds one tile to the sequence.1 lifeMedium 5Maze EscapeEscape a Large Maze Find the way out of a large new maze as fast as you can. After 8 seconds, the light starts to go out, and you see less of the maze.30 by 18Hard 6SudokuEasy Fill the grid so that each row, column and 3 by 3 box holds the digits 1 to 9. Easy: 36 to 40 given digits.36 to 40 digits givenEasy

Reflexes and aim

5 quizzes

Click when the box turns green, or hit targets that move, shrink or carry numbers. The game measures each hit in milliseconds.

Reaction TimeTest Your Reaction Time The box turns green at a random moment. Click or tap as fast as you can. The test takes your average of 5 tries.5 triesEasy Aim Trainer: ClassicHit 30 Targets Targets appear one at a time. Hit 30 targets as fast as you can. The test takes your average time for each target.30 targetsEasy Aim Trainer: TrackingFollow the Moving Target A target moves around the screen for 30 seconds. Keep your pointer on the target. The target gets faster as the time goes on.30 secondsMedium Aim Trainer: PrecisionHit the Shrinking Targets Targets get smaller until they go away, and new targets come faster and faster. Hit each target in time. A miss costs a life.3 livesMedium Aim Trainer: Number HuntHit the Numbers 1 to 30 Numbered targets fill the screen. Hit the numbers from 1 to 30 in order as fast as you can. Each hit brings in a new number.30 numbersEasy

Memory

2 quizzes

Repeat a sequence of tiles, or find a pattern of tiles again. Each level adds one tile.

Sequence MemoryRepeat the Sequence Tiles light up one after another. Click or tap the tiles in the same order. Each level adds one tile to the sequence.1 lifeMedium Visual MemoryRemember the Pattern A pattern of tiles lights up one time. Click or tap the same tiles. Each level adds one tile, and the board gets bigger.3 livesMedium

Sudoku

6 quizzes

Classic Sudoku at four levels of difficulty, plus Killer Sudoku and Jigsaw Sudoku. Every puzzle is new and has one solution.

Easy36 to 40 digits given Medium27 to 32 digits given Hard24 to 29 digits given Expert22 to 27 digits given KillerNo digits given Jigsaw28 to 32 digits given

Mazes

2 quizzes

Find the way out of a new maze before the light goes out. The large maze has twice the area of the small maze.

Maze EscapeEscape a Small Maze Find the way out of a new maze as fast as you can. After 5 seconds, the light starts to go out, and you see less of the maze.21 by 13Medium Maze EscapeEscape a Large Maze Find the way out of a large new maze as fast as you can. After 8 seconds, the light starts to go out, and you see less of the maze.30 by 18Hard

What you can learn

Your reaction time in milliseconds, and how it compares with the times of other players.
How many tiles in a row your memory can hold, and how large a pattern you can find again.
How fast and how accurately you hit targets with a mouse or a finger.
How to find a route through a maze when you can see only part of it.
Sudoku techniques from singles to X-wings, at four levels of difficulty.
How cages and irregular shapes change the rules of classic Sudoku.

Questions and answers

Which brain game is good to start with?

Start with Reaction Time. A run takes less than one minute. Then try Sequence Memory and Visual Memory.

What is a good reaction time?

Most people react to a visual signal in 200 to 300 milliseconds. Your result screen shows how your time compares with other players.

Does my internet connection change my time?

No. Your browser measures each click or tap, so the time of the connection does not count. The server then checks the run against its own clock before it saves the result.

How are the Sudoku puzzles made?

The server makes each puzzle, and every puzzle has one solution. The difficulty comes from the techniques that the puzzle needs, not only from the number of given digits.

What happens when I make a mistake?

In Sequence Memory, one mistake ends the game. Visual Memory and Aim Trainer: Precision give you 3 lives. In Sudoku, the game checks each digit, and three wrong digits end the run without a saved result.

Do I need an account?

No. Every game is free, and you can play without an account. With an account, your best results stay with you on every device.