Cryptogram is a free online letter-substitution puzzle you can play instantly in your browser, no download or account needed. Every letter in the hidden quote has been swapped for another letter throughout the whole message, so cracking one cipher letter reveals every matching spot at once. Tap a cipher letter and type your guess on the on-screen or physical keyboard to test it everywhere it appears; each letter can only be assigned once, so placing it correctly in one spot may move it out of another, just like solving with pencil and paper. Play through 15 levels that grow from a short 20-letter phrase up to a puzzle over a hundred letters long, with no timer forcing you to wait between rounds — crack one cipher and the next unlocks immediately. Spend a limited hint to reveal one letter when you are stuck, start a fresh puzzle at the same level for more practice, and jump back into any unlocked level whenever you want another cipher.
How to play Cryptogram
- Tap any letter tile in the cipher grid to select every tile that shares the same cipher letter.
- Type a letter on the on-screen keyboard or your physical keyboard to guess what that cipher letter decodes to — every matching tile fills in at once.
- Each plain letter can only be assigned to one cipher letter at a time, so reassigning it moves it out of its previous spot automatically.
- Use word length, doubled letters, and common short words to deduce the pattern, the same way a real cryptogram is solved.
- Fill in every cipher letter correctly to reveal the hidden quote and clear the level.
- Levels get harder as you go: puzzles stretch from a short 20-letter phrase up to a much longer quote packed with rarer letters.
Tips
- Look for one- and two-letter cipher groups first — in English those are almost always "A", "I", "TO", "IN", or "IS".
- Watch for a cipher letter that repeats back-to-back — doubled letters like "LL", "SS", and "EE" are common in English and are a strong clue.
- Solve short words before long ones; a 3-letter word narrows the possibilities far faster than a 10-letter one.
- Stuck for real? Spend a hint to reveal one cipher letter before moving on to the next.
FAQ
Is Cryptogram free to play?
Yes. Cryptogram is completely free to play online with no download, no account, and no in-game purchases.
Does Cryptogram work on mobile?
Yes, every tile responds to touch as well as mouse clicks, and the on-screen keyboard means you never need a physical keyboard to play.
How many levels does Cryptogram have?
There are 15 levels, ramping from a short 20-letter phrase up to a single puzzle over a hundred letters long.
What happens if I guess a letter wrong?
Nothing is lost — you can keep reassigning letters as many times as you like until the whole cipher decodes correctly, so there is no penalty for testing a guess.