How to play Brain Benchmark

Five quick brain tests: reaction time, aim, number memory, visual memory and the chimp test. Take today's benchmark and share your score out of 100.

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Brain Benchmark has five tests. You can practise any of them on its own from the main screen, or take Today's Benchmark, which runs all five in a row.

Reaction Time

The screen is red. After a random wait of between one and a half and four and a half seconds it turns green, and you tap as fast as you can. Each reaction is timed from the moment the frame that shows the green is drawn. A tap while the screen is still red is too soon and that try starts again, and so is a tap less than 100 ms after the green, because that is a guess rather than a reaction. Your result is the average of five reactions.

Aim Trainer

Hit the target in the middle to start. Then twenty targets appear one at a time, each timed from the moment it is drawn until you hit it. Your result is the average time per target. Clicking empty space counts as a miss, which is shown with your result.

Number Memory

A number appears for a few seconds, longer for longer numbers. When it disappears, type it in. The first number has three digits and each correct answer adds one. The test ends at your first mistake, and your result is the longest number you remembered.

Visual Memory

Some squares on a grid light up for a second. When they go dark, tap the same squares. Level 1 lights three squares and every level lights one more, and the grid grows as you go. Three wrong squares in a level cost a life and the level is replayed with a new pattern. When all three lives are gone, your result is the last level you completed.

Chimp Test

Numbers from 1 upwards appear on a grid. Tap them in order. The moment you tap 1, all the others are hidden, so you have to remember where each one was. Get them all and the next round has one more number. A wrong tap is a mistake and the round is replayed. After three mistakes, your result is the most numbers you got right in a round.

Scores

Each result is turned into a score from 0 to 100 on a fixed scale, shown with the result. Reaction Time runs from 500 ms (0) to 150 ms (100). Aim Trainer runs from 1,300 ms to 400 ms a target. Number Memory runs from 3 to 15 digits, Visual Memory from level 0 to level 15, and the Chimp Test from 3 to 20 numbers. Anything past an end counts as 0 or 100.

Today's Benchmark

A new Benchmark starts each day at midnight. Everyone gets the same reaction waits, targets, numbers, patterns and layouts. Only your first finished go at each test counts, and if you leave part-way you can pick up at the next test. Your total is the average of the five scores. Finishing all five on consecutive days builds a streak.

Controls

Tap or click. Each test explains itself before it starts.

Reaction Time: tap anywhere, or press Space, when the screen turns green.
Number Memory: type the number and press Enter.
Escape leaves a test.

Strategy tips

For reaction time, look at the middle of the screen and rest your finger on it. Do not try to guess the moment; early taps only restart the try.
In the aim trainer, speed matters more than perfect centring. The whole target counts.
For number memory, split the number into chunks of three or four digits and say them to yourself.
In visual memory, remember the shape the squares make rather than each square on its own.
In the chimp test, look at where 1, 2 and 3 are first, then trace a path through the rest before you tap.
Take the daily when you are fresh. Only the first go counts.
Compare your times on the same device. A different screen or mouse changes them.