Same mystery specimen for everyone each day.
Six guesses. Each wrong guess zooms out and adds clues such as type, color, hardness, and locality.
300+ specimen library with compare and identify pages.
Past puzzles stay in an archive. Stats stay in the browser. No account.
A two-minute daily puzzle when you want geology instead of a word game.
Learning rock, mineral, and gem names from a photo that starts zoomed in.
Checking a look-alike in the library after you finish the day.

Rocksday is a daily photo puzzle for people who like rocks but cannot name the one in their hand. Everyone gets the same specimen, six guesses, and each miss zooms out and adds a clue. When the day is done, the library is there to compare look-alikes. It is free in the browser and does not ask for an account.

Rocksday is a daily photo puzzle for people who like rocks but cannot name the one in their hand. Everyone gets the same specimen, six guesses, and each miss zooms out and adds a clue. When the day is done, the library is there to compare look-alikes. It is free in the browser and does not ask for an account.
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