Test the limits of your logic! For fans of Sudoku and crossword puzzles, Sifr will put your wits to the test, presenting you with over 300 encrypted messages for you to decode, revealing inspiring, insightful, and funny quotes along the way.

Sifr is a mashup of cryptograms, cryptoquizzes, and crossword puzzle like clues. It includes two ways to play:

Decipher Mode: Cryptograms with crossword clues, Decipher Mode gives you encoded phrases to decipher. Puzzles are divided into four difficulties, from easy to the mind-boggling Master levels. Or, choose your favorite category and discover new words of wisdom from Literature, Movies and TV, Philosophy, Humor, Science, History, Art and Music, and Sports.

Timed Mode: Challenges you to decode category related words in a race against the clock. Over 100 categories to play from in four difficulty ranges, pulled from a wide range of subjects, from Countries in South America to characters from popular TV shows. Each board completed gives you points, so you can go back to try and beat your own high score.


• Over 300 cryptograms for you to solve.
• Timed mode, where you can race against the clock for a new high score, unscrambling related words in over 100 categories.
• Play by difficulty or category.
• Ready for a challenge? Try Master mode, a cryptogram unlike any other which will challenge everyone.
• Loaded with interesting and insightful quotes.