PERCEPTION

Reproduce the Time

Watch a reference duration, then try to recreate it from memory. Your reproduction is compared to the original.

MULTI-ROUNDWATCH & RECREATESOLO

TIME REPRODUCTION

Experience a hidden duration. Then try to recreate it from memory with your own start and stop.

How to Play

1. Watch

A hidden duration plays. Focus and remember how long it feels.

2. Recreate

Press START, wait, then press STOP — trying to match the same duration.

3. Compare

See your error, accuracy, and whether you stopped too early or too late.

How Reproduction Accuracy Works

Accuracy measures how close your reproduced duration is to the original hidden duration. The formula is the same as all Stop the Timer games:

Accuracy % = max(0, 100 × (1 − |your time − reference time| ÷ reference time))

If the reference was 6.842s and you reproduced 7.104s, your error is +0.262s (TOO LONG) and accuracy is 96.17%. Rankings always use the raw absolute difference, not the displayed percentage.

Reproduce the Time FAQ

What is Reproduce the Time?+

A time memory game: the system plays a hidden duration, you watch it, then try to recreate the same duration with your own start and stop.

How is this different from Stop the Timer?+

In Stop the Timer you know the target and try to hit it. In Reproduce the Time you only experience the duration once and must recall it from memory.

Is this a reaction time test?+

No. Reaction time tests measure how fast you respond to a signal. Reproduce the Time measures how accurately you can recreate a duration you experienced.

Why can't I see a timer?+

Showing a timer would defeat the purpose — you'd be matching numbers instead of using your internal sense of time.

Does this test my memory or cognitive ability?+

No. This is a casual browser game and self-observation tool, not a medical, psychological, or cognitive diagnosis.

Try another Stop the Timer game →Play Guess the Time →Take the Time Perception Test →

How This Mode Works

A reference duration plays out on screen. Watch it carefully, then try to recreate the same duration by pressing START and STOP. Your reproduced time is compared to the original reference. This tests your ability to remember and reproduce a time interval.

What Appears in Your Score

Reference duration, your reproduced time, delta, direction (early / late), and accuracy percentage.