Dial Back is a free daily memory game, built on the classic digit span test. An extension number appears on the display of a desk phone for a few seconds. Then it is gone, and you dial it from memory on the keypad. Each day brings five or six numbers that grow longer. From Wednesday on, the last two have to be dialed backwards, which works the memory even harder. Monday goes from 3 to 5 digits. Friday goes up to 8.
No sign-up and nothing to install. It runs in your browser on a computer or a phone, and your progress is saved on your device.
- You choose the moment. The number appears only when you tap Show number, so you can take a breath first.
- Checked at once. The game checks the number as soon as the last digit is in.
- No dead end. After a wrong number you see it again and have another go. Misses are counted, and nothing else happens.
- Backwards rounds. A turn-around arrow marks the numbers that are dialed last digit first.
How to play Dial Back
- Tap Show number and read the number while the yellow bar runs down.
- When the display goes blank, dial the number on the keypad.
- If it was wrong, tap Show it again and try once more.
- Dial all the numbers of the day to finish.
What you see on the phone
| Part | What it means |
|---|---|
| Display | Shows the number, then your digits. The lines are digits still to dial. |
| Yellow bar | The time left to look at the number. |
| Show number | Starts the round. After a miss it shows the number again. |
| Turn-around arrow | This number is dialed backwards. |
| Dots and squares | The numbers of the day. Squares are the backwards ones. |
| Misses | Wrong numbers so far. |
Tips for remembering numbers
- Chunk it. Read 482915 as 482 and 915. Two chunks are easier to hold than six single digits.
- Say it in your head. Repeat the number silently in a rhythm until you start dialing.
- Look for a pattern. A year, a price, a jump of two: anything familiar makes digits stick.
- Dial at once. Memory for digits fades within seconds, so do not wait after the display goes blank.
- For backwards numbers, keep the chunks. Hold 386 as it is, picture it, and read your picture from the right.
How the week gets harder
| Day | Numbers | Digits | Dialed backwards |
|---|---|---|---|
| Monday | 5 | 3 to 5 | None |
| Tuesday | 5 | 4 to 6 | None |
| Wednesday | 5 | 4 to 6 | 2 numbers, with 3 and 4 digits |
| Thursday | 5 | 5 to 7 | 2 numbers, with 4 and 5 digits |
| Friday | 6 | 5 to 8 | 2 numbers, with 5 and 6 digits |
Saturday plays like a Wednesday and Sunday like a Tuesday.
Frequently asked questions
Is Dial Back free?
Yes. There is no account, no download and no paywall.
What is a digit span test?
It is a standard test of short-term memory: a list of digits is shown or read aloud, and you repeat it. Most adults manage about seven digits forwards and about five backwards. This game uses the same idea for a daily exercise. It is not a medical or psychological assessment.
How long is the number shown?
Half a second, plus 0.7 seconds for every digit. A number of 4 digits stays for about 3 seconds, one of 8 digits for about 6.
What happens when I dial a wrong number?
The game shows what the number was. You can look at it once more and dial again. Each wrong number adds one to the misses.
Why backwards?
Dialing a number backwards means you have to hold it and rearrange it at the same time. Psychologists call that working memory.
Can I use the keyboard?
Yes. On a computer, click the game once and type the digits. Backspace erases.
When do the new numbers appear?
At midnight in your local time.
Can I play earlier days?
Yes. Open the calendar button at the top of the game and pick any day from the past eight weeks.
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