Crack the safe โ Day #1
Vaultle is a free daily code-breaking puzzle based on the classic game of Bulls & Cows (also known as Mastermind). Every day there's one hidden 4-digit code โ all four digits are different โ and the same code is shared by every player. Your goal is to crack it in nine guesses. New to it? Read our full Bulls & Cows guide.
After each guess you get two clues: the number of bulls (a correct digit in the correct position) and cows (a correct digit in the wrong position). Use those clues to deduce the code, then share your spoiler-free result grid. A brand-new code drops every day.
Is Vaultle free? Yes โ free, no ads, no login. Optional tips support development.
How often are there new puzzles? A new code every day, the same for everyone, reset at midnight UTC.
What's the difference from Wordle? Same daily, shareable format, but you crack a number code using bulls & cows logic instead of guessing a word.
More free daily puzzles: Spectra (colors) ยท all games by Atlas.