A word appears in code. Type what it says before the clock runs out. Each correct word adds time and builds your combo, and the ciphers get harder as your score climbs.
Ready to crack some codes?
You have 60 seconds. Each correct word adds 3 more.
Best score: 0
How the rounds get harder
The game starts with the friendliest codes and adds tougher ones as your score grows:
Starting out:A1Z26 numbers and small Caesar shifts. The shift is shown, so move each letter back by that amount.
From 120 points: the Atbash mirror alphabet joins in.
Press Play and type the hidden word as soon as you work it out. There is no Enter key to press: a correct word scores by itself and the next one appears. You start with 60 seconds, and each correct word adds 3 seconds.
How does scoring work?
Longer words and harder ciphers are worth more. Each correct word in a row raises your combo, up to five times the points. Skipping a word resets the combo and costs 2 seconds, so a quick guess can be worth it.
What if I do not know the cipher?
Open Show the key under the answer box to see the whole alphabet in the current cipher. The clock keeps running, but it is a good way to learn. After a few runs you will start to recognize the common letters.
What is the daily run?
Everyone gets the same starting words on the same calendar day, so you can compare scores with friends. Your rounds change as your score changes, since harder ciphers join the mix sooner for faster players.
How do I challenge a friend?
After a run, press Share score. The link you copy gives your friend the same starting words and shows them the score to beat. Later rounds can differ, because they depend on the score so far.
Where is my best score saved?
Only in this browser. There are no accounts, so clearing site data or changing device starts it over.